用所给词的正确形式填空。

1. Jenny _____ (need) some help. Can you help her _____ (cut) up the tomatoes, please?

2. I'm busy now. Please _____ (turn) on the radio for me.

3. How many _____ (tomato) do we need to make a great turkey sandwich?

4. It takes me about lo minutes _____ (make) a banana milk shake.

5. What do we need _____ (buy) for supper?

慢性支气管炎并发肺气肿的主要症状为（）

A.喘息

B.逐渐加重的呼吸困难

C.突然出现呼吸困难

D.发绀

E.心悸