摘要：50．The mountains look grey the blue sky. A.against B.over C.under D.for 介词.连词专练答案 1-5 A B B C C 6-10 C C B D A 11-15 D B A A A 16-20 B A B D B 21-25 C C B A A 26-30 A A D D B 31-35 D A D C A 36-40 D B A D C 41-45 D A A D A 46-50 C B B D A

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