高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
All the rooms here are dirty. They need ＿＿＿＿.
A.cleaned
B.being cleaned
C.cleaning
D.to clean
All the rooms here are dirty. They need ＿＿＿＿.
A.cleaned
B.being cleaned
C.cleaning
D.to clean
参考答案：
佳题速递：