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
The singer sang many songs, ________ some of my favorites.
#49669
A
include
B
included
C
including
D
to include
Teenagers shouldn’t be allowed          .
#48398
A
to drive
B
drive
C
to driving
D
Driving
Thanks for ____me to the party.
#49189
A
ask
B
to ask
C
asking
D
Asked