[.单选题]()those books do you want?
A.What are
B.Which of
C.Which are
D.What
[答案]B
[.单选题]()I knew him better,I discovered that my impression had been right.
A.Which
B.As
C.Until
D.Unless
[答案]B
[.单选题]The heavy snow could not keep us()going out to work.
A.from
B.on
C.upon
D.up
[答案]A
[.单选题]They found the lecture hard().
A.to be understood
B.to understand
C.for understanding
D.to have been understood
[答案]B
[.单选题]I learned how to()a bicycle when I was six years old.
A.drive
B.ride
C.pull
D.draw
[答案]B
[.单选题]()by the air， the kite went up into the sky。
A. Pushing
B. Pushed
C. Having been pushed
D. Having pushed
[答案]B
