T-3-Q17. 天山-7-14 新问关于虚拟语气

hanlei8492

                                                               T-3-Q17. 天山-7-14  not one of...后面的谓语动词怎么用阿                                                                
                                                         

Not one of the potential investors is expected to make an effort to buy First Interstate Bank until a merge 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 merge 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 merge agreement including a provision for penalties if the deal was

C.is expected to make an offer to buy First Interstate Bank until a merge 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 merge 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 merge agreement including a provision for penalties if the deal were

这题答案选A没有问题，不过我的问题在于，后半句If领导的虚拟语气，if the deal were，为什么用Were不用Was？Deal不是单数么？求解答～

jbc88

后面的if the deal were是虚拟。

不能使用was的。