---how many students are there in the classroom?
---_____Idon’t know where they have gone.
A. No one B. None C. Nobody D. Nothing
Our playground is not so tidy and beautiful as before. Students must _____ dirty things on it.
A. be stopped to throw B. be stopped from throwing
C. stop to throw D. stop from throwing
I _____ this book for two weeks. I have to return it now.
A. borrowed B. have borrowed C. kept D. have kept
—Do you think a radio is useful in learning English?
—Sure. A radio can _____ listening English songs and reports.
A. be used by B. be used as C. be used for D. be used to
—_____ swim in the river?
— oh, no. Our teacher told us ____ here. It’s dangerous.
A. Why don’t; not swim B. Why not; not to swim
C. Why not; don’t swim D. Why don’t; don’t swim
_____ the morning of December 1st, 2006, the 15th Asia Games _____ in Doha(多哈).
A. In; held B. On; was held C. At; held D. For; were held
