19,一道英语选择题的诱惑We must have an engineer ______ the workers build the house.A.to seeB.seeC.seeingD.seen

问题描述:

19,一道英语选择题的诱惑
We must have an engineer ______ the workers build the house.
A.to see
B.see
C.seeing
D.seen

A
That's right!

B

A
have sb.to do sth.让某人做某事 用于被动句中

D
must have +P.P