2019年mpacc考试英语真题——介词和介词短语287

{01}He tried to deal with the ever-increasing burden of his work，but finally _____ and had to take a complete rest.
A.broke away
B.broke up
C.broke down
D.broke out
解析：考查词组辨析：A．broke away 脱离， B．broke up分手，解体， C．broke down（身体）垮掉，机器出故障D．broke out爆发，句意是：他想应付日益增加的工作压力，但最终累垮了，不得不完全休息。选C。
本题选C。
{02}---Why was he unhappy yesterday?
---A letter from home ______ an attack of homesickness.
A.set off
B.set out
C.set about
D.set up
解析：考查短语辨析。set off爆发，set out出发，set about着手做，set up 建立，句意：昨天他为什么不高兴？一封来自家乡的信使他突发了思乡病。所以选A。
本题选A。