There are about 200 --people in the hall A.thousand B.thousands C.thousand of D.thousands of
问题描述：
There are about 200 --people in the hall A.thousand B.thousands C.thousand of D.thousands of
答
你好，选A.hundred,thousand单独使用时是不能用s的，但跟of连用时，所以BC排除，再根据语境，这里D不能选，因为前面有了200.满意请采纳，谢谢！
答
There are about 200 -thousand-people in the hall A.thousand B.thousands C.thousand of D.thousands
答
A
表示几千不用复数
thousands of 是数以千记的,前边不用数字
thousand of 是错的