首页
›
答案
›
题库
›
继续教育
›
其它
Don’t laugh () people when they are () trouble.
Don’t laugh () people when they are () trouble.
A.in….at…
B.at….at…
C.at… in…
D.on… in…
正确答案:C
上一条:
The article is written for the purpose () showing why bionics is a growing science.
下一条:
He succeeded () out a lot of things entirely new in the world.