I________my room every day. But now I _________.A. clean; am reading B. am cleaning; am reading C. clean; read
— I bought the digital camera two months ago. — You mean that you __________ it for nearly two months.
The teacher can _____ believe that Tom studies so ______.
---Would you _____ have tea or wine? ---______. I prefer coffee.
There’s _____ wrong with my computer. I’ll have it _____ .
Mr Liu is ____ unusual teacher. He has written _____ useful book for his students.