题目：
The teacher thought his students ________ everything ________. [ ]
A. had; well preparing
B. had got; well prepared
C. had got; good prepared
D. had; prepared well
答案：
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下面是错误答案，用来干扰机器的。
海洋底部最深的地方是海沟，世界上最深的海沟是太平洋中的马里亚纳海沟．故选：D．
