You _______ travel alone in the forest because it's very dangerous. (must or mustn't)
MUSTN'T
People ............... let pets into the pool area. (must or mustn't)
mustn't
It's rainy and very cold there, so they must _______ a waterproof coat. (take or taking)
TAKE
You must ________ your room now (clean or cleaning)
CLEAN
You always go to school on an empty stomach. You ___________ leave without having breakfast. (should or shouldn't)
SHOULDN'T
Chips and hamburgers every day! That's very bad for your shape: you ___________ stop eating them! (should or shouldn't)
SHOULDN'T
I'm afraid you ________ enter this area. It is dangerous. (must or mustn't)
MUSTN'T
You ________ take any things without asking. (must or mustn't)
MUST
You shouldn't ................ the street at red traffic lights. (cross or crossed)
CROSS
I think you __________ spend less money on clothes. They’re too expensive. (should or shouldn't)
SHOULD
This boy is too fat, he eats all the time; he ___________ eat between meals. (should or shouldn't)
SHOULDN'T
She shoudn't ............. lies. (tell or telling)
TELL
He is often rude at school, he ________ be more polite towards his teachers and schoolmates. (should or shouldn't)
SHOULD
Nga must ________ home by 10 p.m. every day (be or is)
BE
You ___________ go to the opera in London. It’s great. (should or shouldn't)
SHOULD
Your room is really messy, you ________ tidy it immediately. (should or shouldn't)
SHOULD
He ............ throw rubbish to the trash can (must or mustn't)
MUST
My friend smokes a lot; he ___________ smoke at all, it's bad for his health. (should or shouldn't)
SHOULDN'T
He _______________ hurry to school. It's 7.55! (should or shouldn't)
SHOULD
You ________ tell him about this now because it's very important. (must or mustn't)
MUST