Tom gave Helen an apple in exchange for a piece of cake.

A:What would some students like to do after finishing their educationB:They would like to start to work___they needn’t depend on their parents.

He was breathing ______ after the relay race

I don’t think _____ possible to travel around the world without any modern equipment. [ ]

What time will Mr. Brown be back to China? —Sorry. I don’t know______.