Though great progress has been made in astronomy in the past fifty years, ______ still much that remains mysterious to astronomers _______ the universe, even the solar system.
发布时间:2021-08-13
A.It is; of
B.there is; about
C.It is; with
D.there is; with
试卷相关题目
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A.do you
B.don't you
C.can it
D.can't it
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A.does she
B.doesn't she
C.have they
D.haven't they
开始考试点击查看答案 - 3I told you the other day that Tom had agreed with your idea, ____________?
A.hadn't he
B.didn't he
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开始考试点击查看答案 - 5Your sister must be helping the little girl with her homework, _______ ?
A.needn't she
B.mustn't she
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D.must she
开始考试点击查看答案 - 6— Peter, you feed the gold fish and the two little tortoises, ______? — I did it in the morning; it's a routine for me now.
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开始考试点击查看答案 - 7—I don't imagine Russ and his poor dog had a good time on the deserted island,________? —I have no ide
A.A.didn't they
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A.being
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A.It; whether
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开始考试点击查看答案 - 10—I don't think we have met before,________? —Yes,once at a party,but we weren't introduced.
A.do I
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