Jack wasn’t saying anything，but the teacher smiled at him ________he had done something very clever．
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A
as if
B
in case
C
while
D
though
推荐题目
1. By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ___________ appeared a rare rainbow soon. 2.
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A
of which
B
on which
C
from which
D
above which
In South Africa, English is the language ________ black parents wish their children to be educated.
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A
for which
B
that
C
in which
D
when
4.Occasions are quite rare ______ I have the time to spend a day with the kids.
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A
who
B
which
C
why
D
when
The little boy who got lost decided to remain ________ she was and wait for her mother.
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A
what
B
how
C
who
D
where