—Look! Why are there so many people? —Th...

—Look! Why are there so many people?

—There are some policemen. I think there ________ a traffic accident.

A. must have B. can have

C.is going to be D. must be

D 【解析】试题分析：句意：——看！为什么有这么多人？——有一些警察，我想一定出了交通事故。根据句子结构可判断，此句是there be句型。排除A,B；C答案是一般将来时态；根据情况判断，事情已经发生，表示一种肯定的推测。答案为D。考点：考查There be句型。

考点分析：

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