How the fire in the hotel started ______ a mystery. A. remain B. to remain C. remains D. is remaining 参考答案:C 答案解析:[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
第22题: [单项选择]You have been sitting on my hat and now it is badly out of ______. A. date B. shape C. order D. balance 参考答案:B 答案解析:[考点] 固定搭配 [解析] out of shape是“变形”的意思,根据前面“你一直坐在我的帽子上”可判断出帽子是“变形”了。out of date意为“过时”;out of order