求助T-3-Q17. 天山-7-14，没看到讨论链接

T-3-Q17. 天山-7-14

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

这道题答案是A,但if the deal were明显主谓不一致呀，请NN帮忙解释，我觉得应

我猜想应该是表虚拟，但如果做题时，怎么看出应该用虚拟语气呢，句子里又没有明显的提示？

还是说只能根据逻辑意思来判断，晕晕。。。

同问！

如何判断were是否当虚拟语气？

哪位NN帮忙解释一下？

多谢了！

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.
  

其中的THAT用的对嘛？其它选项有问题，我觉得A也不对啊？谁能帮忙解释下，谢谢！

继续问~~汗，天山第三套题做的暴差~~

a merge agreement is signed that includes a provision

我觉得是定语从句 只不过把is signed 提前了

还原就是a merge agreement that includes a provision for penalties  is signed