The boys volunteer three hours________up the park near their school. A.to clean B.cleaning C.cleaned...
2022-06-27 16:00:04 49次 新疆乌鲁木齐市2019-2020学年八年级下学期3月月考英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
The boys volunteer three hours________up the park near their school.
A.to clean B.cleaning C.cleaned D.clean
本题链接：
