Прочитайте предложения в видо-временнойформе present perfect continuous, задайте cпециальный вопрос, начиная со слов данных в скобках: образец: it has been raining since morning. (since since when has it been raining? 1.he has been working at this problem since august. (since when …? ) 2. they have been studying the contract for two hours. ( how long …? ) 3.the managers have been discussing this matter for half an hour. (how long…? ) 4. they have been dancing since nine. (since when …? ) 5. she has been speaking on the phone for half an hour. (how long …? ) 6. the children have been watching tv since morning. (how log 7. he has been reading since three o‘clock. (since when …? ) 8. they have been doing this work for two hours. (how long …? ) 9. you have been playing computer games since nine. (since when …? ) 10. my boss has been writing a report for two hours. (how long …? )
1. Since when has he been working at this problem?
2. How long have they been studying the contract?
3. How long have they been discussing this matter?
4. Since when have they been dancing?
5. How long has she been speaking on the phone?
6. How long have they been watching TV?
7. Since when has he been reading?
8. How long have they been doing this work?
9. Since when you have been playing computer games?
10. How long has my boss been writing a report?