________ is often the case with human beings, many animals sleep a lot when young, but sleep much less when they get older.
#67127
A
Which
B
What
C
As
D
That
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________the American economy expanded at an annual rate of 2.5 percent in July—September, it faced a long road to recovery.
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A
Since
B
If
C
While
D
When
_________ pleased me was that there was my purse, in the back seat of the taxi, _____ the driver couldn’ t possibly see it before.
#69797
A
That ; that
B
Which ; which
C
What ; where
D
How ; when
（2014年山东日照市高三校际联合检测）9．He didn’t tell his wife about buying a new car for her_____he could give her a big surprise on her birthday．
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A
so that
B
even though
C
as if
D
in case
The course normally attracts 20 students per year, ____ up to half will be from overseas.
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A
in which
B
of whom
C
of which
D
for whom