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

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19,一道英语选择题的诱惑Wemusthaveanengineer______theworkersbuildthehouse.A.toseeB.seeC.seeingD.seen19,一道英语选择题的

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
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

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
A
have sb.to do sth.让某人做某事 用于被动句中

D
must have +P.P

B

A
That's right!