题目内容:
The () sign tells everyone you're not in the hotel room.
A.I am out.
B.Please make up this room.
C.Do not disturb.
D.Do not come in.
参考答案:
The () sign tells everyone you're not in the hotel room.
A.I am out.
B.Please make up this room.
C.Do not disturb.
D.Do not come in.