天山 7-14

Q14:
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: a

请教b错在哪里？  

Your answer lies here:

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=84884