男，43岁，长期咳嗽，经常咳脓痰15年。发热、咳脓臭痰1周来诊查体，左肺下背部呼吸音弱，可闻及湿啰音。

应考虑诊断可能为（）

A.急性肺脓肿

B.支气管扩张症，继发感染

C.慢性支气管炎继发感染

D.支气管囊肿继发感染

E.左下肺炎

用所给词的适当形式填空。

1. The ____ (leaf) on the trees are turning green.

2. Our teacher is very____ (friend). We all like her very much.

3. My father usually ____ (relax) one hour at noon every day.

4. Tom, please do your homework ____ (one).

5. Let's____ (go) to see the panda first.