He’s working hard for fear that he _______.
A.should fall behind B.fell behind
C.may fall behind D.would fallen behind
That they were wrong in these matters _____ now clear to us all.
A.is B.was C.are D.were
Do you think climbing is _____ to our health?
A.beneficial B.invaluable C.advisable D.worthy
The opening ceremony of the 2008 Olympics, which _____ more than three hours, was completely great and special.
A.lasted B.occupied C.performed D.played
In the middle of the lake ________ which looks very beautiful.
A.stand a tall tower B.lie a tall tower
C.lay a tall tower D.stands a tall tower
Out _____, with a stick in his hand.
A.did he rush B.rushed he
C.he rushed D.he did rush
