Question

I knocked on the door several times but _____ ans

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 既要答案，也要具体理由。

Answer 1

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 has given us _____ advice on how to improve our memory. 解析：advice是不可数名词，常见词组：give sb some advice , 因此答案： A) much
A) much B) many C) a lot D) several

Answer 2

B 没有人回答用Noblday
A advice不可数名词much 修饰不可数

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