____ ____ ____ stay in the room with the air-condiioner in s
____ ____ ____ stay in the room with the air-condiioner in s
We ____ in oxygen in the air
o ____ out,in the open air
There is a nurse in the room.____ ____ ____ ____ there in th
There no ____(desk) in the room.
There ____ in the next room.
Who is in the twins'room?-____.
listen!Someone ____ (sing) in the room.
-Who is in the room?-____.
They ____ ____ ____ in the afternoon
_____ (number)of the students ____(stay)in the classroom
The Internet____ ____ ____ ____(广泛使用)in the early 1990s in d