禽流感一定会发烧吗:一道选择题

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/14 03:56:30
The crowd _____ fighting for their lives.
A.was B.were C.is D.had been
(解释)

B
their说明crowd强调复数
又fighting
所以用B

B
crowd作名词解:人群。是集体名词

B the crowd为复数形式