She looks very busy . I want to help her , but I don't know ___________ .
#50250
A
what to do
B
what to do it
C
how to do
D
why to do
推荐题目
—He asked her_________the bag because it was too expensive．
#50420
A
not to buy
B
to buy not
C
not buying
D
not buy
The doctor told me, “Don’t forget ________ the medicine after dinner.”
#50289
A
to take
B
taking
C
have
D
eating
——Now lots of teenagers spend a lot of time playing computer games. ——Yes. Teachers and their parents should prevent them ______________ too much.
#50157
A
to play
B
play
C
plays
D
playing