2019年mpa考试英语真题——介词和介词短语1579

{01}Children should be encouraged to help their parents,which________helps them to learn how to
cooperate and share.
[      ]
A.in return  
B.in addition  
C.in brief  
D.in turn
解析：
本题选D。

{02}All passengers________are expected to fasten the seat belts when the plane takes off or lands.
A.  on the board  
B.  on board
C.  on boards  
D.  on a board
解析：
本题选B。