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I don’t think         possible for us to learn a foreign language well without hard work.
#55731
A
them
B
this
C
it
D
that
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推荐题目
 I can’t find my ticket. I think I must have lost_____.
#55733
A
it
B
one
C
this
D
them
Scientists are working hard to make _______ possible for people to live on Mars in the future.
#55873
A
it
B
that
C
this
D
one
 Ted's mother kept telling Ted not to tell lies, but_______ didn't help.
#55837
A
they
B
it
C
she
D
he
I think____________ necessary _____________ to take more exercise.
#55774
A
it, for Jim and me
B
it’s, to Jim and me
C
that , for Jim and I
D
that’s, to Jim and me
________ seems that Mary has known that bad news.
#55817
A
That
B
It
C
This
D
She