I knocked on the door several times but _____ answered,so I left._英语解答

I knocked on the door several times but _____ answered,so I left.A) somebody B) nobody C) anybody D) everybody The professor has given us _____ advice on how to improve our memory.A) much B) many C) a lot D) several 也要具体理由.

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解答

I knocked on the door several times but _____ answered,so I left.解析：这句话中关健词but,有转则,前面肯定句,后面应该是否定句.答案B) nobody A) somebody B) nobody C) anybody D) everybody The professor ha...