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
I     this book yesterday, You can take it away.
#48444
A
finish reading
B
finished read
C
will finish read
D
finished reading
Would you mind _________ the piano softly ?
#50945
A
to play
B
playing
C
played
D
play
Mr Smith told me that he wasn’t used to ___ by plane and he usedto __sick a lot.
#50880
A
travelling; feel
B
travel; feeling
C
travel; feel
D
travelling; feeling
Let’s ________ football this Sunday.
#50451
A
to play
B
playing
C
play
D
plays