指教！！~~急~~GWD 02套

Q3:

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.

A.   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

B.    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

C.   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

D.   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

E.    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

Answer: C

Answer: C

我选的是A，不明白为什么选C， C中until 从句的谓语是原型BE，难道是因为前面的is expected to ??  不大明白，NN指教~~~

我选的是A，不明白为什么选C， C中until 从句的谓语是原型BE，难道是因为前面的is expected to ??  不大明白，NN指教~~~