must\mustnt

You ___________ sit in the sun for too long in the summer.

You ________ wear warm clothes in winter.

You must _________ talk in the library.

You ________ feed the animals in the zoo. it's dangerous.

You _______ call her. It's her birthday today!

You ______ study for your test tomorrow.

You _________ eat vegetables and fruit. they are healthy.

You _________ run at school.