30 надо , task 4. choose the correct answer. 1 she the door when she heard the phone ring. a had just locked в is locking c locks 2. they ……….for hours when they stopped to have lunch. a were working в had been working c worked 3. i …….. for two hours by 12 o’clock. a will have been reading в will have read c am reading 4. he ………..the letter as soon as it arrived. a had opened в opened c had been opening 5. sarah…………. dinner when she burnt her finger. a was cooking в cooks c is cooking 6. philip ………..his dinner by the time we get home. a had been having в will have had c will have 7. the people ………. for an hour before the rescuers came. a had been waiting в waited c are waiting 8. emily…………. her lunch already, even though it’s only 10 o’clock. a has eaten в was eating c ate 9. tom ……….his homework ever since he got home from school. a has been doing в is doing c does 10. my parents ……… to bed by the time i got home. a are going в had been going c had gone

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