[求助]prep 语法题一道...

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

这题的正确选项就是这个了。。prep模考时候的错题。。。

纠结于deal 后面 为什么要用were...我上来一看把were得就都给排除了。。。

希望牛牛们能帮忙。。

我明白了。。模考的时候太紧张了。。谢谢大大