题目
A.did you know
B.do you know
C.have you know
D.you know
第4题
It used to be thought ______ the Earth was flat.
A) as B) when C) since D) that
第6题
___________
A] when
[B] since
[C] for
[D] whereas
第8题
A.When Steven was eight years old;As the renowned movie director; Since then
B.When Steven was eight years old; Since then; As the renowned movie director
C.Since then; As the renowned movie director; When Steven was eight years old
D. As the renowned movie director; Since then; When Steven was eight years old
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