SQL ERROR: query=( SELECT 'common' AS book_type, pbs.book_section_id, pbs.snippet, b.id AS book_id, b.name AS book_name, b.year AS book_year, b.series AS book_series, b.link as book_link, b.litres_link, ba.id AS author_id, ba.name AS author_name, ba.link as author_link, bst.pid as pid, bs.link as section_link FROM kartaslov.phrases p JOIN kartaslov.phrase_book_section pbs ON pbs.phrase_id = p.id AND pbs.book_type = 'common' JOIN kartaslov.books b ON b.id = pbs.book_id JOIN kartaslov.book_authors ba ON ba.id = b.author_id JOIN kartaslov.book_section_text bst ON bst.id = pbs.book_section_text_id JOIN kartaslov.book_sections bs ON bs.id = bst.book_section_id WHERE p.phrase = ? LIMIT 0, 3 ) UNION ALL ( SELECT 'classic' AS book_type, pbs.book_section_id, pbs.snippet, cb.id AS book_id, cb.name AS book_name, cb.year AS book_year, cb.series AS book_series, cb.link as book_link, NULL AS litres_link, cba.id AS author_id, cba.name AS author_name, cba.link AS author_link, cbst.pid as pid, cbs.link as section_link FROM kartaslov.phrases p JOIN kartaslov.phrase_book_section pbs ON pbs.phrase_id = p.id AND pbs.book_type = 'classic' JOIN kartaslov.classic_books cb ON cb.id = pbs.book_id JOIN kartaslov.classic_book_authors cba ON cba.id = cb.author_id JOIN kartaslov.classic_book_section_text cbst ON cbst.id = pbs.book_section_text_id JOIN kartaslov.classic_book_sections cbs ON cbs.id = cbst.book_section_id WHERE p.phrase = ? LIMIT 0, 3 ); err=Unknown column 'pbs.book_section_id' in 'SELECT' SQL_ERR Have been doing exercises — mening, synonymer och bästa Google/Yandex-resultat
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have been doing exercises

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1 test-english.com /grammar-points/b1/p...
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https://test-english.com/grammar-points/b1/present-perfect-simple-present-perfect-continuous/
Titel
Present perfect simple and present perfect continuous
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Present perfect simple and present perfect continuous
Present perfect simple and present perfect continuous. I have done vs I have been doing . B1 – English intermediate grammar exercises .
2 learnenglish.britishcouncil.org /grammar/b1-b2-gramm...
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https://learnenglish.britishcouncil.org/grammar/b1-b2-grammar/present-perfect-simple-continuous
Titel
Present perfect simple and continuous | LearnEnglish
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Present perfect simple and continuous | LearnEnglish
She's been training for a half-marathon. I' ve had three coffees already today! They' ve been waiting for hours. Try this exercise to test your grammar.
3 www.perfect-english-grammar.com /present-perfect-pre...
Fullständig URL
https://www.perfect-english-grammar.com/present-perfect-present-perfect-continuous-3.html
Titel
present perfect simple or continuous exercise 3
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present perfect simple or continuous exercise 3
Click here for our complete programme to perfect your English grammar. Choose present perfect simple or continuous 3. Choose the present perfect simple or the ...
4 assets.cambridge.org /97805211/89392/exce...
Fullständig URL
https://assets.cambridge.org/97805211/89392/excerpt/9780521189392_excerpt.pdf
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Present perfect continuous and simple (I have been doing ...
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Present perfect continuous and simple (I have been doing ...
10.3 Put the verb into the more suitable form, present perfect simple (I have done) or continuous. (I have been doing ). 1 Where have you been? Have you been ...
5 learn.kotoenglish.com /exercises/b1/presen...
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https://learn.kotoenglish.com/exercises/b1/present-perfect-continuous/
Titel
Present Perfect Continuous Exercises
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Present Perfect Continuous Exercises
Improve your English with interactive Present Perfect Continuous tense exercises and polish your grammar skills in a fun and easy way with Koto English.
6 english-practice.net /english-grammar-exe...
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https://english-practice.net/english-grammar-exercises-present-perfect-continuous-and-simple/
Titel
English Grammar Exercises
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English Grammar Exercises
Exercise 3. Put the verb into the more suitable form, present perfect simple (I have done) or continuous (I have been doing ). 1 Where have you been? …………………….
7 englishworksheets.net /practice/e-pr-pf-n-...
Fullständig URL
https://englishworksheets.net/practice/e-pr-pf-n-pr-i-have-done-i-have-been-doing-n-i-do-i-am-doing.html
Titel
Present perfect and present (I have done / I have been ...
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Present perfect and present (I have done / I have been ...
This pages gives information on English Grammar Exercises - Present perfect and present (I have done / I have been doing and I do / I am doing) - ESL Tasks.
8 avi.cuaed.unam.mx /uapa/avi/ing_7/U_1/...
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https://avi.cuaed.unam.mx/uapa/avi/ing_7/U_1/ing7_u1_t3/index.html
Titel
What have you been doing? (Present Perfect Continuous)
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What have you been doing? (Present Perfect Continuous)
We use Present Perfect Continuous ( have / has + been + verb-ing) to talk about actions that are repeated over a period of time.
9 english4real.com /practice/b1_g-pr-pf...
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https://english4real.com/practice/b1_g-pr-pf-continuous.html
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B1 Grammar - Present perfect continuous
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B1 Grammar - Present perfect continuous
1) they've been doing their homework ______ an hour . 2) He's been supporting his local football team ______ they were promoted to the premier league. 3) She's ...
10 grammar-tei.com /present-perfect-con...
Fullständig URL
https://grammar-tei.com/present-perfect-continuous-uprazhneniya/
Titel
Present Perfect Continuous. Упражнения
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Present Perfect Continuous. Упражнения
6 авг. 2014 г. — Упражнения на отработку Present Perfect Continuous . Exercises. Упражнения на тренировку с ответами. проверьте знание времени Present perfect ...

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