the air to hold some of the sun’s heat,the earth at night ________, too cold for us to live.

Hardly had Sabrina finished her words when Albert said___，“Don’t be so mean，’’ pointing a finger of warning at her.

We have known something about theaccident, but we need more ____. Can you help us— Yes, sir.

Lisa is than her sister.

Do you think you will be able to finish yourwriting by five o’clock today— __________. I’ll be busy with experiments all day.