Airplanes can be the best for traveling large distances in a short amount of timE.()
Opting for the train saves you hassle at the airport.()
Trip goals and personal preferences should be linkeD.()
Bus rides might promote health.()

A.()
Opting
B.()
Trip
C.()
Bus
D.()

【参考答案】

Para.3,Para.4,Para.2,Para.1