◎ 题干
A large number of engineers ___ to Africa by our government to help the people there every year.
[     ]
A. have sent        
B. will send          
C. are sent        
D. was sent
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“A large number of engineers ___ to Africa by our government to help the people there every year.[ ]A. have sentB. will send C. are sent D. was sent…”主要考查了你对  【被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。