Only when the villagers were faced with water shortage___ how serious the problem of water pollution was．
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A
did they realize
B
will they realize
C
they did realize
D
were they realized
推荐题目
Never before______ such a wonderful park, ______ I'd like to pay a visit again.
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A
had I seen; where
B
have I seen; which
C
have I seen; where
D
had I seen; which
（湖南省怀化市2014年高三第二次模拟考试）29. — When is he willing to lend his friends some money?— Only when ______ hard enough.
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A
to press
B
pressed
C
pressing
D
is pressed
Zhang Hua is clever and works hard at his subjects.
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A
So is Li Ming
B
So does Li Ming
C
It was the same with Li Ming
D
So it is with Li Ming
. Little ______about his own health though he was very ill.
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A
he cared
B
he cares
C
does he care
D
did he care