1. A: My sister will leave for Britain this afternoon. May I see her off?

　　 　 B: ______ ______ ______. Go ahead.

　　2. A: May I come in?

　 B: Yes, ______ ______. Come in please.

　　3. A: Can I help you?

　　    B: ______ ______ ______borrow a book on a computer.

　　4. A: ______ ______ with your watch?

　　    B: It doesn't work.

B： Yes. ______ a cup of tea.

A． I'd like　　　　　　　　　　　　　　B． Id like

C． I'd want　　　　　　　　　　　　　 D． Id want

完成对话，每空格限填一词。

1.A: Could she carry the box?

　B: No, she ______. The box is ______ heavy ______ her ______ carry.

2.A: Can I help you?

　B: ______, ______.

3.A: Excuse me, where's the maths teacher's office?

　B: I'm sorry. I'm ______ ______, too.

4.A: Would you like to work at the South Pole in the future?

　B: Yes, I'd ______ ______.

A： _______ I help you?　　　

[　　]

B： Yes, please. I want some tea.

A．Must　　　B．Can　　　C．Do　　　D．Am

-- ______?

-- I want to buy a new pen.

[    ]

　　A. Can I help you　　  B. Do I help you

　　C. Must I help you　　 D. Do you need my help