－How can we get to the airport? It’s too far and too expensive to take a taxi.－Don’t worry

问题补充：

－How can we get to the airport? It’s too far and too expensive to take a taxi.

－Don’t worry. There is a bus service to the airport.

A. regular

B. general

C. normal

D. Usual

答案：

(答案→)A. regular

B. general

C. normal

D. Usual

解析：句意：上文，我们怎样去机场呢？乘出租车去太远也太贵了。下文，别担心。有一个到机场的有规律的公共汽车服务。Regular有规律的；general大致的；normal正常的；Usual通常的，选A。