从他的面部表情上判断，他好像已经知道了事情的真相。(facial expression)
___________________________________________________________

_____ trees are planted each year on the Tree-Planting Day all over the country.

　 A.Tens of thousand　　 B. Tens of thousands of

　 C.Ten of thousands of D. Tens and thousands

We had a　　　　 (努力)to stop the criminal.

—Please clean the blackboard when class is over,Tom.

—______.

—Clean the blackboard when class is over,Tom.

A.Please say again

B.Please say it clearly

C.I beg your pardon

D.I don’t understand you

News came from the school office ________Wang Lin had been admitted to Beijing University.

A. which　　　　　　 B. what　　　　　　 C. that　　　　　　　 D. where

He had led everyone to ______ that his family was very rich.

　 A. believing　 　 B. believe 　 C. be believed　 　　 D. be believing

Those who have questions to ask ________to my office after class, _________?

A. comes, will you　 B. come; don’t they 　 C. come, will you?　 　 D. comes, don’t they?