A number of people were reported to__in a series of explosions .
题目
A number of people were reported to__in a series of explosions .
A number of people were reported to__in a series of explosions on London's transport system on Thursday morning.
A.had been killed
B.have been killed
why we choose
答案
to 动词不定式后加动词原型
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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