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. - 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
- 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
- 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
- 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
- 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
正确答案是C, 我选的是A。我觉得C中by them很别扭，而且with短语修饰的agreement两个离得太远了，另外，if从句应该是a provision for penalties的条件，这样变成介词短语+条件从句。 请教大家的意见，thanks in advance! | 
