they often heard the sound of soldiers___on the playround.Adoing exercisesBdo exercises选哪个 并排出另一个原因
问题描述：
they often heard the sound of soldiers___on the playround.
Adoing exercises
Bdo exercises
选哪个 并排出另一个原因
答
A
答
选A 士兵操练的声音 如果是soldiers' 你明白 ?意思和用法是一样的 考察名词所有格
答
Doing ,the sound of 后面肯定要这样子的