A: Excuse 1　　 . Do you 2　 an eraser?

B: 3　 ,I do.

A: Can I 4　　　　 it, please?

B: Certainly. Here you　 5　

A: Thanks.

B: 6　 Welcome. But please give it　 7　 soon.

A: 8

A: Here you are, here's 9　 eraser. Thanks very much.

B: Not at 10 .

A. can I do　　 B. will I do　　　　 C. could I do　　 D. I could do

－Sorry, he isn’t in at this moment. ________ a message? 

A. Can I leave　　    B. Can I take  C. Can you bring　　　　  D. Can you get 

Do you know where ______________ some maps?

　　　　　 A. can I buy　　　　　　　　　 B. can buy

　　　　　 C. I can buy　　　　　　　　　 D. buy

Can you tell me what ______ next?

　　A.can I do　　B.to do　　C.doing　　C.I to do