---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
We had a hard time ____________ the basketball match, but finally we made it.
#51231
A
win
B
won
C
to win
D
winning
—May I listen to the music here, Mr. White?—Sorry, you’d better it like that.
#50541
A
not to do
B
not do
C
don’t do
D
not do to