Question

People try to avoid public transportation delays by using th

Answer 1

D

in turn 意为“依次,轮流”。根据所提供的情景“People try to avoid public transportation delays by using their own cars”可判断出会增加进一步的问题。in short 意为“简而言之”；in case 意为“万一”；in doubt意为“不能肯定的,可怀疑的”。