Have you noticed the problem ________ he is now in low spirits？________ come?
#30464
A
where；What
B
that；How
C
in which；For
D
what；As
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—You look tired, Jack． What's wrong with you?—Oh, 1 worked quite late last night． Nothing wrong with me, ．
#30367
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although
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though
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yet
D
still
— Did he realize the serious situation immediately?— No. It was quite a long time ________ he really realized it.
#34285
A
now that
B
when
C
ever since
D
before
Finally, I bought the new book,_____I spent twenty yuan, in the bookstore where a friend of mine is the boss.
#34219
A
on which
B
which
C
for which
D
that