________. I have had plenty.　　　

[　　]

A． No, I don't　　　　　　B． Yes, I do

C． No, thanks　　　　　　D． Yes, thank you

He is a farmer.　　　

[　　]

A．What is he doing　　　    B． How old is he

C． What does he do　　  　　　D． How is he

----What is your sister doing?

----______.

[    ]

　　A. Yes, she does   B. She is doing housework

　　C. Yes, she is　　 D. She is a teacher

How many pears do you want? ________. 

[　　]

—Can I use your car this afternoon?

—________, but I'm going to do some shopping this afternoon.

[　　]

—Please let me use that computer, Mr Cook.

—________.That's Mr White's. He never lets others use it.

[　　]

—Could I keep the book until tomorrow?

—________ , but you mustn't lend it to others.

[　　]

(Henry wants to see his teacher, Mr Brown.)

—________ I see you this evening, Mr Brown?

— Certainly. Please come any time this evening. I'm free.

[　　]

(Mrs Jackson gets on a bus and asks another woman)

—________ I take this seat?

—Sure, please.

[　　]

—________ come in, Mrs Black?

—Certainly. We're all waiting for you, Tom.

[　　]