单选（1-3）

1. There’s a _____ in our office that when it’s somebody’s birthday, they bring in a cake for us all to share.

A. tradition

B. balance

C. concern

D. relationship

2. “Tommy, run! Be quick! The house is on fire!” the mother shouted, with clearly _____ in her voice.

A. anger

B. rudeness

C. regret

D. panic

3. Giving up my job to go back to full-time education was a big _____, but now I know it was the best decision I ever made.

A. project

B. commitment

C. competition

D. ambition