We are busy__________ the final exams.
#51125
A
to prepare for
B
preparing for
C
preparing
D
preparing with
推荐题目
I’m very sorry to keep you _____ for a long time
#51143
A
wait
B
waits
C
waiting
D
to wait
Would you like ________ me how ________ after my bird?
#51130
A
tell; look
B
to tell; to look
C
to tell; look
D
tell; to look
Everything seemed _______ so fast and now it’s all over. 
#50615
A
happen
B
happened
C
to happen
D
happening
Be sure ________ and tell me what happens.
#49799
A
writing
B
wrote
C
writes
D
to write