Unlike the earth, Mars is too cold and Venus is far too hot _______ there to be any life.
The boy ought to have gone to school ___, but he slept ___noon.
The train leaves at 6:00 p.m. So I have to be at the station ____5:40p.m.at the latest.
I saw Jack yesterday. He told me that he would stay here _____ the end of this year.
_____ defeated, they didn't lose heart.
---May I attend your lecture, Mr. Green? ---Welcome _____ open arms.