A、I am pretty sure that I won’t be late. B、I give you my word not to be late. C、I’ll try my best, so there’s no doubt that I’ll

1. The departure of Flight 007 to Honolulu has been delayed by two hours, we are sorry for the inconvenience.
2. I’ll try my best to come, although I doubt if I’ll be there on time.
3. Production of new nuclear power plants has slowed down because of public concern over the safety of nuclear energy.
4. What should concern you is if your boss criticizes you personally, rather than your work.
5. When you define a new word, be concise, the shorter the definition, the easier it is to remember.