Jack, go and get some chalk, ___?

Hello! May I speak to Lucy，please—Sorry，I’mafraid you have the wrong ．

Agreat person is always putting others’ interests _________ his own.

He lived in London for 3 months, during ____ time he learned some English.

Please call me at 8:00 tomorrow morning. I’m kind of forgetful. ——Don’t worry about that, you’ll be surely ____.