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Ⅰ.单项选择。(10分)
( )1.-What a nice classroom!
-It _____ every day.
A.is cleaning B.has cleaned C.must clean D.is cleaned
( )2.I spend much money on books _____ I am not rich.
A.but B.so C.even though D.as if
( )3.China takes the leading position _____ space industry.
A.in B.at C.of D.up
( )1.-What a nice classroom!
-It _____ every day.
A.is cleaning B.has cleaned C.must clean D.is cleaned
( )2.I spend much money on books _____ I am not rich.
A.but B.so C.even though D.as if
( )3.China takes the leading position _____ space industry.
A.in B.at C.of D.up
