帮我看看这个英语题选什么
问题描述：
帮我看看这个英语题选什么
Who do you think___the first to step into the field?
A.was B.to be C.of being D.being
选哪个?
答
A.was
Who (do you think) was the first to step into the field?
括号中是插入语,可以去掉,不影响句子结构.