题目内容
The windows haven’t cleaned for a long time. They need ______.
A.to clean | B.to be cleaned | C.cleaning | D.B and C |
D
解析

练习册系列答案
相关题目
Listen to the two girls by the window. What language ____ ?
A.did they speak |
B.were they speaking |
C.are they speaking |
D.have they been speaking |