——Guess what!I met an old school friend last week.——How nice!How long____ each other?
— If you listen to me, you ______ take a good rest at once.— OK, I ______ do so.
What surprised me was not what he said but ______ he said it.
— ______ will get the first prize?— I'm sure, Li Hua.
_____ leaves the room last ought to turn off the lights.
Why not seize it _______ you’ve got such a good chance?