1. What should you do with your cell phones while you are inside the lab? You should _______ your cell phones.
举一反三
- Would you please turn off your cell phones for the _____ of the flight?
- Also, you should take your cell phone with you. What’s （3）
- While you are eating, you should not try to… A: hold a conversation. B: use your fork with your right hand. C: use your cell phone. D: fill your plate.
- If you lost your luggage, what should you do?
- You’d better turn off cell phones if you are in a meeting.