填空题
A.c
oo
k
B.w
oo
d
C.b
oo
t
D.childh
oo
d
【参考答案】
C
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填空题
A. research B. newspaper C. Christmas D. Thursday
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单项选择题
The water at the bathing beach became()by refuse from the factory.
A. pollute
B. polluted
C. polluting
D. being polluted
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