All passengers ... (should/must) wear seat-belts. My tooth hurts. I think I ... (shouldn’t/ought to) see a dentist.
I ... (couldn’t/needn’t to) eat sweets when I was a girl.
You ... (don’t have to/mustn’t) walk on the grass.
You ... (have to/shouldn’t) be kind and polite.
He ... (doesn’t have to/shouldn’t) whistle inside a house.
Your brother ... (ought to/must) eat healthy food.
Strawberry yoghurt ... (mustn’t/doesn’t have to) contain real strawberries.
You ... (should/have to) read this book. It’s really nice.
Greg ... (can/ought to) spend more time on English grammar.

Студент71653    1   23.09.2020 01:52    1