Susan did lots of research ()that subject last monthfor. On. In. At.填哪个

分类: 作业答案 • 2023-01-24 13:24:41

问题描述：

Susan did lots of research ()that subject last month
for. On. In. At.
填哪个

答

on 关于。

答

第一个。。。。。

答

填 on
Susan did lots of research on that subject last month.
有关那个课题,苏珊上个月做了很多研究.
on 表示“关于”
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