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
这里答案是A，可GWD31-02-03给的答案可是C呀！到底哪个对呢？ 我比较倾向C，只是不清楚这个动词原型有什么说法 望指教！ | 
