---I knew she was at home because I heard her TV, but she didn't open the door.
---She ______ the bell.

A.
must not hear
B.
must not have heard
C.
may not hear
D.
may not have heard

---Can I help you?
---I'd like to buy a present for my mother's birthday, ______ at a proper price but of great use.

A.
one
B.
that
C.
the one
D.
which

---The cars give off a great deal of waste gas in the streets.
---Yes. But I'm sure something will be done to ________ air pollution.

A.
reduce
B.
remove
C.
collect
D.
warm

---Can I speak to Wang, sir?
--- ______ I'll call him.

A.
Speaking!
B.
Hang on!
C.
Who is it?
D.
With pleasure!

---Jack can't attend the party tonight.
---But he ______ to come.

A.
refused
B.
suggested
C.
can't stand
D.
promised

I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.

A.
However
B.
Anyway
C.
Therefore
D.
Though

I don't think this film is by far the most boring. I have seen ______.

A.
better
B.
worse
C.
the best
D.
the worst

---Do you mind my smoking here?
---_______．

A.
No,thanks
B.
No．Good idea
C.
Yes,please
D.
Yes．Better not

---How are you managing to do your work without an assistant?
---Well，I ______ somehow．

A.
get along
B.
come on
C.
watch out
D.
set off

Would you please ______ this form for me to see if I've filled it in right?

A.
take off
B.
look after
C.
give up
D.
go over

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