请教GWD2-Q3

saturnor

Not one of the potential investors is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were not to be concluded.

a.is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were
b.is expected to make an offer for buying First Interstate Bank until they sign a merger agreement including a provision for penalties if the deal was
c.is expected to make an offer to buy First Interstate Bank until a merger agreement be signed by them with a provision for penalties if the deal were
d.are expected to make an offer for buying First Interstate Bank until it signs a merger agreement with a provision for penalties included if the deal was
e.are expected to be making an offer to buy First Interstate Bank until they sign a merger agreement including a provision for penalties if the deal were


请问这个题到底应该选哪个呢？答案给的是C。。请问B怎么不对。。为什么要用虚拟呢？

saturnor

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