29. To pass the driving test, Alice had a busy month______driving the car.

A．to practise

B．practising

C．practised

D．Practise

发作时两肺广泛哮鸣音，缓解后哮鸣音消失，常见于（）

A.支原体肺炎 

B.肺炎链球菌肺炎 

C.慢性支气管炎急性发作期 

D.支气管哮喘 

E.支气管扩张症