Will you come to help me ________ cooking.

1. A.
   in
2. B.
   about
3. C.
   with
4. D.
   on

— When will you come to Daqing?

— I will call you _____I arrive.

A. till             B. while     

C. as quickly as    D. as soon as

--- Will you come to the dinner party?

--- I will not come until Jenny __________.

—Will you come to the dinner party?

---I won’t come unless Jenny ___________。

A．will be invited      B．can be invited      C．invited            D．is invited

--Will you come to the party? ---__________ you also invite Blade.

A. Why not          B. Only if              C. If not               D. When