---Have you heard of Earth Day? --- Yes, We have only one Earth. We have no choice but ________ it.
#49067
A
protect
B
protected
C
protecting
D
to protect
推荐题目
You must be tired. Why not _______ a rest?
#50516
A
to stop to have
B
to stop having
C
stop to have
D
stop having
The boy is playing football instead of ______volleyball．
#49094
A
playing
B
plays
C
playing the
D
to play
People are often made ________ by the ________ man.
#51306
A
laugh; interested
B
to laugh; interested
C
laugh; interesting
D
to laugh; interesting