Must and Must not (1)

Practise using "must" and "must not" in sentences!

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Use "must" when you want to say that you or someone else needs to do something (or you get in trouble). For example: I must do my homework.

Use "must not/mustn't" when you or someone else needs to avoid doing something or are/is not allowed to do it. For example: You must not be late for class OR You must not smoke.

I ______ phone home when we arrive in London, so my parents won't worry.

I [[spacer]] phone home when we arrive in London, so my parents wont worry.

Solution:
must

I ______ forget my sports gear for school today!

I [[spacer]] forget my sports gear for school today!

Solution:
must not

I ______ cross the road when the traffic light shows red.

Solution:
must not

I ______ feed my cats every night!

Solution:
must

I ______ take my keys today as nobody will be home when I return.

Solution:
must

I ______ forget to brush my teeth before going to bed.

Solution:
must not

Most children ______ wear school uniforms in Great Britain.

Solution:
must

I ______ speak with a full mouth, my Dad says.

Solution:
mustn't

I ______ listen to my favourite music after school because it relaxes me so much.

Solution:
must

Parents ______ look after their children well.

Solution:
must

We ______ use our phones in class.

Solution:
mustn't

I ______ practise my lines tonight so I know them for the show tomorrow!

Solution:
must

We ______ shout out in class but raise our hands instead.

Solution:
must not

I ______ eat all the biscuits but leave some for my brothers.

Solution:
must not