---I often have hamburgers for lunch.--- You’d better not. It’s bad for you too much junk food.
Be careful _too fast, or there _be an accident.
_______lovely weather and ________ nice time we have !
The maths problem is very easy, _____ I don’t think all of you can work it out.
Thank you for ______ me go on the trip ,Mr Wu.
We talked _______ until Mr Wu asked us _______.