首页 > 中学英语试题 > 题目详情
Some children were seen _______in the garden all the morning. It must have been _______who picked th...
题目内容：
Some children were seen _______in the garden all the morning. It must have been _______who picked the flowers.
A. playing; they B. to play; they C. playing; them D. play; them
本题链接：