1 . The problem was ________ could give him a hand.
A.how | B.why | C.who | D.that |
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2 . He has made so many mistakes. That is _________ he is too careless. (用适当的词填空)
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3 . The old building, behind _____ was a famous church, was _____ we used to work.
A.that; the place | B.it; the place |
C.what; where | D.which; where |
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