请教牛人，急

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.

1. 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
2. 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
3. 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
4. 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
5. 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