The clever boy made a hole in the wall, ________ he could see what was going on inside the building.
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A
on which
B
at which
C
through which
D
in which
推荐题目
How are the kids spending their childhood? I can’t help recalling（回忆）that there was a time _______ we played happily and freely in the outside.
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A
that
B
which
C
when
D
不填
On her birthday, she received from her parents a nice present ________ a note was attached, saying “We love you so much”.
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A
which
B
to which
C
in which
D
where
Fans from miles around crowded into the stadium for the concert of Jay Chou on September 4th, 2010, _________ are popular with teenagers.
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A
many of his songs
B
and many of whose songs
C
many of which songs
D
many of whose songs
The book was written in 1946, _______ the education system has witnessed great changes.
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A
since then
B
when
C
since when
D
during which