Many students are          about football． They          play a game whenever possible．  

---Honey, stay home before I return. ---I _______, mum. 

Living in a fast-paced world, we                  get left behind if we stop learning.

If you _____ smoke, please go outside because this is a non-smoking office.

---Dad, must we wait until the light becomes green?---Yes, I’m afraid we ______. That’s the traffic rule.