At the beginning of class, the noise of desks could be heard outside the classroom.
A.opened and closed |
B.to be opened and closed |
C.being opened and closed |
D.to open and close |
推荐套卷
At the beginning of class, the noise of desks could be heard outside the classroom.
A.opened and closed |
B.to be opened and closed |
C.being opened and closed |
D.to open and close |