— I think the waiter has forgotten us. We ________ here for over half an hour!

题干

— I think the waiter has forgotten us. We ________ here for over half an hour!
— I think you’re right. He probably thinks we have already ordered.

A：are waiting

B：have been waiting

C：have waited

D：will wait

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B

A: You have nice teeth, Lily. You must take good care of (好好爱护) them.

B: Thank you. I try! ____.

A: Yes, I talked to him after he went to see a dentist.

B: He went to the dentist? ____

A: Why is that great?

B: He had a toothache (牙痛) yesterday. I told him to go to a dentist. ____

A: Brush your teeth two or three times a day.

B: What e/se (别的) did the dentist say?

A: Get a new toothbrush every three or four months.

B: Didn't the dentist tell Ken anything else?

A: ____

B: Yes, but what about Ken's tooth? ____

A: Oh! The dentist found a small piece of food under Ken's gums (牙龈). Ken needs to floss (用牙线剔牙) every day.

B: Wow. He just needed to floss!

A. That's great!

B. What's the problem?

C. Visit the dentist often.

D. What did the dentist say?

E. He couldn't sleep well because of it.

F. How often does he ~visit the dentist?

G. Hey, Susie, did you see Ken this morning?