In order to look at sea life closely,people have to _____ some kinds of special equipment
问题描述：
In order to look at sea life closely,people have to _____ some kinds of special equipment
1.work in
2.work over
3.work out
4.work off
选几?希望能告诉一下含义.
答
.
不是说了
work out 了么.
制造出撒