Present Simple. Present Continuous. Present Perfect. Present Perfect Continuous.
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Задание 7
Choose the correct answer to fill in the gaps. I _____ writing a letter.
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Задание 8
Choose the correct answer to fill in the gaps. What _____ you doing now?
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Задание 9
Choose the correct answer to fill in the gaps. How long _____ you _____ reading this book?
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Задание 10
Choose the correct answer to fill in the gaps. I _____ writing a test for half an hour.
