—Why not come and join us in the game?—__________, but I must meet Mr. Smith at his office now.

 ---- Let’s go for a walk in the garden. -----         , but I need to do the wash-up.

—Have you been wasting time on computer games again?—_____. I’ve been studying a lot and I need a break. 

—Don’t bother to buy me an air ticket. I’ve got one.—　　　Why didn’t you tell me earlier? I’ve got one, too. 

—I heard that Tom stole all the money from the old man. —You’re joking! ________