---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
You must be very tired. Why not  ___________a rest?
#55275
A
to stop to have
B
to stop having
C
stop to have
D
stop having
--What did you do last weekend, Sarah?--I
#52073
A
would do my homework
B
was practicing speaking English
C
had surfed on the Internet
D
studied for the test
I could ________ my bed and ________ my clothes. 
#54772
A
make; fold
B
make; do
C
fold; do
D
fold; wash
____you go to school by bus?
#59322
A
Are
B
Is
C
Do
D
Can