题目内容
-Why do you keep the windows open on such a cold day?
-There are so many students here, so we want to keep the air nice and _________.
cold
dry
cool
clean
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题目内容
-Why do you keep the windows open on such a cold day?
-There are so many students here, so we want to keep the air nice and _________.
cold
dry
cool
clean
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||