Enough attention has been paid ________ our economic environment.

A.
to improve
B.
to improving
C.
to be improved
D.
for improving

—He failed his exam again.
—But what did you _____? Had he ever been working hard?

A.
think 　　
B.
expect 　　
C.
consider 　　
D.
imagine

-Have you any letters ________, sir? I'm free this time.
-No, but thank you all the same.

A.
to type
B.
to be typed
C.
to be typing
D.
typed

---Excuseme. Is this the right way to the Summer Palace?
---Sorry, Iam not sure. But it ______ be.

A.
might
B.
will
C.
must
D.
can

--- _ John come here tonight?
--- I’m not sure, but he stay at home.

A.
May, might
B.
Can, must
C.
Must, might
D.
Can, migh

We had to wait half an hour ______ we had already booked a table.

A.
since
B.
although
C.
until
D.
before

-Have you informed Bob of the gathering?
-No, _________ is no knowing about his whereabouts．

A.
he
B.
there
C.
it
D.
no one

---Is everyone here?
---Not yet ... Look, there _____ the rest of our guests!

A.
come
B.
comes
C.
is coming
D.
are coming

--- I’m still working on my project.
--- Oh, you will miss the deadline. Time is _________ .

A.
running out
B.
going out
C.
giving out
D.
dropping out

-Jack was admitted to Harvard University．
-_________? He is only 12 years old．

A.
So what
B.
Who cares
C.
Are you kidding
D.
What for

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