1 . Only ________ to solve the problem and only working with him ________.
A.he is able; we can succeed | B.is he able; can we succeed |
C.through him are we able; can lead to success | D.through him is able; can success be achieved |
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2 . What ________that caused the plane crash?
A.you think was it | B.do you think was it | C.you think it was | D.do you think it was |
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