初中英语冠词填空题

﹣You've dropped           "s" in the word" necessary"．

﹣Oh，          letter"s"is doubled．（　　）

A．a； aB．a； theC．an； theD．the； the

Qu Dongyu is　　 official（官员） of the United Nations， who is from Yongzhou．

He who has not climbed 　    　 Great Wall is not a true man.

When I went past the bank yesterday，I saw 　 　 old man lying on the street.