Only when class began______that he had lost his bag in the street.A、will he real

游客2023-09-21  25

问题 Only when class began______that he had lost his bag in the street.

选项 A、will he realize
B、he did realize
C、did he realize
D、should he realize

答案 C

解析 当“only+状语/状语从句"位于句首时,主句要用倒装结构,即将助动词或情态动词放在主语前面,且主句的时态为过去时,所以答案为C)。
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