He speaks English with strong American accent, so he______ brought up in the Uni

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问题 He speaks English with strong American accent, so he______ brought up in the United States or Canada.

选项 A、must have been
B、must be
C、may have been
D、can’t have been

答案 A

解析 must have been brought up in the U．S．or Canada“一定是在美国或加拿大长大”。对过去情况作肯定推断，用must have done。

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