--- Who left the door open?
 --- Oh, sorry. I _____ the door.
| A.ought to lock | B.should lock | C.ought to have locked | D.could lock | 
Tom: Mike, our team will play against the Rockets this weekend. I’m sure we will win.
 Mike: ______!
| A.Congratulations | B.Cheers | 
| C.Best wishes | D.Good luck | 
—I’ve studied growing plants as one of my interests. Could I make some suggestions?  
 —______.
| A.You will make it | B.Go right ahead | 
| C.Don’t mention it | D.Take it easy | 
—It’s a long time since I saw my sister.
  —______ her this weekend?
| A.Why not visit | B.Why not to visit | 
| C.Why not visiting | D.Why don’t visit | 
—Excuse me, can you tell me where the nearest bank is, please?
 —______ Oh yes! It’s past the post office, next to a big market.
| A.Mm, let me think. | B.Oh, I beg your pardon? | 
| C.You’re welcome. | D.What do you mean? | 
—Will you join us in the game?
  —Thank you, ______.
| A.but why not? | B.but I’d rather not. | 
| C.and I won’t. | D.and I’ll join. |