must, need, have to, should (1)
choose the correct modal verb and write it in the correct form: also negatives and interrogtives
Children______________eat a balanced diet. Otherwise they can be ill.
____________to clean all this before I go ? Oh, yes, of course you need to
You_______________cross over the road, or motorbikes may run over you.
_______________to do all your homework before TV, when you were a kid ?
My grandmother always give some kind advice, like I_____________smoke less and eat more.
You_____________drive without your belt, it will save your life.(strong prohibition)
Summer camps are ok, but there are a series of things you______________do like cleaning and some sort of community work. (external obligation)
__________________bring my own skis, or you can lend me some ?
That______________be Peter, nobody drives like that in the world.(deduction)
When you are at my parents', you_______________eat everything if you don't want to. They will understand.