题目内容：

( C)7.--- How many people were there at the meeting?----_______.
A.Nobody B.No one C.None D.Nothing
(A )20.The doctor worked for ___ after twelve o’clock.
A.two more hours B.two another hour C.more two hours D.another two hour
( C)26.____John ____Jack may go with you because one of them must stay at home.
A.Neither； nor B.Both； and .C.Either； or .D.Not only； but also
括号中的是参考答案,请一个一个地详细说明
( C)7.--- How many people were there at the meeting?----_______.
A.Nobody B.No one C.None D.Nothing
为什么不选A，B

优质解答

1 c(表示数量,只是与人有关）
2 a(首先需要是复数,bd排除,c 的话按照比较级的用法不对,选a)
3 c(首先是排除a ,原文意思是有一个要留下,而a 是两个都不.
同理,b 排除,它的意思是两个都,d也排除为两个都,
只有c 符合原意）