The teacher________the office for a few minutes when we arrived.We didn’t meet him.A.have leftB.had leftC.had been away from
Daniel is always willing ________ others _________ with their Math.
---____________________? ---He is generous and polite.
Many American students think Chinese is __________ any other foreign language.
We are _______ tired to go any ____________. Let’s stop to have a rest.
--- Can I have ________________________? ---Of course. Here you are.