My neighbors used to give a hand in time of trouble, was very kind of them.
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A
who
B
that
C
what
D
which
推荐题目
I was given three books on cooking，the first ________ I really enjoyed.
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A
of that
B
of which
C
that
D
which
When deeply absorbed in work, _____ he often was, he would forget all about eating or sleeping.
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A
that
B
which
C
where
D
when
____ can be seen in the chart right here, the air pollution level in the city has been increasing over the last months.
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A
What
B
It
C
that
D
As
I have a big dream — I want to go into space, _______ will take some time to realize, I guess.
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A
which
B
it
C
what
D
where