Question

 People try to avoid public transportation delays by using their own cars,and this ___ creates further problems.

A.in short                                  B.in case

C.in doubt                                  D.in turn

Answer

 D

解析: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”。