1. We left early in order not to miss the bus.

2. Peter offered Joe to carry that heavy bag for him and Joe refused his offer.

3. They arranged to meet there at 8 o'clock.    

4. I promise not to be late for school again.

5. I haven't seen Mai since last Monday.

6. Don't forget to check your flight number

1. We left early so that we wound't miss the bus (in oder to)

-> We left early in order to we wound't miss the bus

2. Can I carry this heavy bag for you, Joe? No, thanks. I can manage

-> Peter offered to carry this heavy bag for Joe

3. Let's meet here at 8 o' clock.

-> They arranged to meet there at 8 o'clock

4. I promise that I won't be late for school again. (to inf)

->I promise not to be late for school again

69. The last time I saw mai was last Monday. (present perfect)

-> I haven't seen mai on monday

70. Remember to check your flight number.

-> Don't forget to check your flight number