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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
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When I got into the classroom, I found a book ______ on the floor.
#51284
A
lying
B
lies
C
lie
D
lied
We must hurry up. There are few minutes _______.
#48779
A
to leave
B
leaving
C
left
D
leave
One of the important lessons children learn from their parents is  ________
#48527
A
how speaking politely to others
B
how to speak politely to others
C
what time speaking politely to others
D
what time to speak politely to others
I heard him______ outside.
#50192
A
sang
B
to sing
C
singing
D
sings
--- Would you please ____  _ her _____    me back?--- All right, I will tell her.
#48863
A
ask, to call
B
ask, call
C
to ask, call
D
to ask, to call