单项选择题

He doesn't seem to be able to do it, () I thought he could.

A.though
B.since
C.if
D.because

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The horse is getting old and can't run () it did.

A.as faster as
B.so fast than
C.so faster as
D.as fast as
单项选择题
The world is () seven continents and four oceans.

A.made up of
B.made out of
C.made from
D.made in
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