My mother is busy_____ the room.
#49979
A
clean
B
to clean
C
cleaning
D
cleans
推荐题目
 I think this piece of music is  worth_______.
#49895
A
listening
B
to be listened to
C
listen to
D
listening to
He spent one day ________with his friends.
#50768
A
play
B
playing
C
to play
D
plays
I find it very hard           the question.
#50173
A
to answer
B
answers
C
answering
D
answered
You shouldn’t worry about not _______ breakfast then.
#49166
A
have
B
having
C
to have
D
had
The children decide _____ their school yard this Friday afternoon.
#49278
A
clean
B
to clean
C
cleaning
D
cleaned