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问题: 大学英语2 阶段作业2 问题16 要详细解释

16、He left yesterday, so he_________in Beijing.
A、may arrive
B、may have arrived
C、must arrive
D、arrives

解答:

16、He left yesterday, so he____B_____in Beijing.
A、may arrive
B、may have arrived
C、must arrive
D、arrives


may(must) + have +done:表示猜测