The air conditioning in this room is very efficient.

We have to cooperate to make the project successful.

It's better not to respond to his provocation.

It seems like he is deliberately provoking me.

He is strong like a superman.

I have been to Changchun.

His manner of speaking is always calm.

I will wake up early and go jogging tomorrow morning.

I contacted a professional to request the tuning of the piano.

I was asked to tune the piano.