--- May I use your new dictionary? I want to look up a word.
--- It’s over there. _______.

—You won’t believe it, Sam. I was chosen as an exchange student to China.
—Congratulations!     .

--How often do you eat out?
--______, but usually once a week.

– I’m sorry I didn’t finish it on time.
-- ________.

—Are you going to Tom’s birthday party? --- ________. I might have to work.

---We could invite John and Barbara to the Friday night party.
--- Yes, _______? I’ll give them a call right now.

—Would you like to watch the movie with me tonight?
—        ，but I have too much homework to do. 

—How about going for a picnic this weekend?
— Why not? _________.

—I don't have any change with me.  Will you pay the fare for me?
— ________ .

-----Tony said he could fix my bicycle, but I really doubt it.
----- _____.He’s good at that sort of thing.