---Listen, Mum. I heard the footsteps. Is it Dad? ---It ___ be him. He’s gone to Beijing on business this morning.
#53951
A
can’t
B
mustn’t
C
needn’t
D
shouldn’t
推荐题目
The French book must be Li Ying’s. She’s the only one who’s studying French.
#58441
A
belong to Li Ying’s
B
belong to Li Ying
C
belong Li Ying’s
D
belong Li Ying
Your shoes under the bed _________. Put them in the sun, please.
#60528
A
are smelt bad
B
smell bad
C
smell badly
D
are smelt badly
Mr. Li makes me ____, because it is bad for my health. 
#55048
A
don’t smoke
B
not smoke
C
not smoking
D
not to smoke
 You must be tired now. Why not ________ to have a rest?
#56825
A
to stopping
B
to stop
C
stop
D
stopping