How the fire in the hotel started ______ a mystery.A、remainB、to remainC、remain

游客2025-07-26  0

问题 How the fire in the hotel started ______ a mystery.

选项 A、remain
B、to remain
C、remains
D、is remaining

答案 C

解析 本题考查句子的主谓一致性。由于本题的主语是主语从句“How the fire in the hotel started”,所以谓语动词应该是单数,本句意思是“宾 馆的大火的起因至今仍是个谜团”。故正确答案是[C]。
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