If you want to be left alone on an elevator, the best thing to do is _____.
举一反三
- left alone in a party, the best thing to do is keep a ________ from others.
- The best thing to do is to ________________ you think interesting and ______________
- If you want to start a trip, the first thing you should do is to _________.
- What is the first thing to do if you want to see a doctor in western countries?
- The best thing you can do to protect your possessions while ________ is to purchase an insurance.