Frank often wears a mask _____ he can keep fit in the foggy and hazy (霾) weather.

---I am going to Qingdao and stay there for a week.
---______ you are there, would you please buy some books for me?

Practice more, ________ you’ll do better in playing chess.

——Excuse me. Is it my turn now?
——Not yet. Please wait on the chair ______your name is called.

He recorded ________ the chairperson said at the meeting.

I always sleep with windows open _______ it is too cold outside.

Learning to write is learning to think. You don’t know things clearly _________ you can write
them down.

You won’t feel happy at school___________ you get on well with your classmates.
A. though          B. unless         C. because

Run for more than half an hour every day, ________ you can lose your weight easily.

________ Jeremy was hurt in the match, he didn’t give up and finished in ninth place.