It is too cold in the room.We have to keep the air-conditioner____ all day.A.opening B.open可是B为什么不对呢?

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It is too cold in the room.We have to keep the air-conditioner____ all day.A.opening B.open可是B为什么不对呢?

It is too cold in the room.We have to keep the air-conditioner____ all day.A.opening B.open可是B为什么不对呢?
It is too cold in the room.We have to keep the air-conditioner____ all day.
A.opening B.open
可是B为什么不对呢?

It is too cold in the room.We have to keep the air-conditioner____ all day.A.opening B.open可是B为什么不对呢?
B.open
keep+sth+adj,让某物怎么样.这里的意思是,让空调一直开着

B
open 在此是个形容词,意思是“开着的”

B

A keep+doing sth.