题目

since there is not much time left,i will tell you about it in...
a,detail
b,brief
c,mcommon
d,total
2 you always take ...great trouble to help me when i am in ..trouble
a,a;/
b,/;/
可trouble不是可数吗?
3,a series of speeches...given by the teacher
a,has been
b,have been
一系列东西终究不还是复数吗?

提问时间：2021-04-01

答案

1. in brief 是简略的,简要的
2. take trouble 固定搭配 “给...带来麻烦或 麻烦...”
3. 表示整体,老师所做的“一系列的演讲”此处表整体,可以指是同一个演讲,但给不同的群体