1.Yu Fang insisted that she was (be) tired and was willing to stay the night but I insisted that she (should)_go (go) at once.
2.I'd rather you met (meet) her at the airport tomorrow morning.
3.It is bad manners to show off your knowledge and cleverness in public.
4.It's high time that we did/should_do (do) something to improve the situation.
5.New means of transport make it possible to travel around cities within hours.