____has been said before, it is not easy to learn a foreign language.
#73382
A
As
B
It
C
What
D
As it
推荐题目
If she ______ well in her exams, she will go to Beijing University in September.
#41273
A
did
B
does
C
is doing
D
will do
Those were the graduate assistants ______ to do the research work in the lab.
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A
to whom it was their responsibility
B
whose responsibility there was
C
whose responsibility was
D
of whom with the responsibility
______ we think of Ben, we have to admit that he is a highly competent man.
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A
However
B
Whether
C
Whichever
D
Whatever
This is Mr. Smith. _______ help I worked out many difficult problems.
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A
whose
B
with whom
C
who
D
with whose
Without facts , a person can’t form a correct opinion , for he needs to have actual knowledge his thinking .
#71682
A
which to be based on
B
on which to base
C
which to be based
D
which to base