1.--there days I can only sleep for four or five hours at night as I’m too busy with my research work.
问题描述：
1.--there days I can only sleep for four or five hours at night as I’m too busy with my research work.
---If you keep going on like that,you are sure to _____sooner or later.
A.break down B.get down C.calm dow D.put down
答案是A为什么
答
答案是A,break down 意思是指身体垮掉,或者机器出故障,而B get down 意思是下来,
C calm down 意思是使...某人冷静下来,D put down 意思是把...东西放下来