obligation
must/mustn't
can/can't or must
necessity or obligation
have to/don't have to
obligation
must/mustn't/have to/don't have to
mixed
100
You _____ give your pet food and water every day.
must
100

There is no homework, so I ______ go out with you this afternoon. (CAN, CAN'T)

can

100

At school, we ____ wear uniforms.

have to

100

You ____ turn on the central heating. It's automatic. (mustn't, don't have to)

don't have to

100
You ____ cross the road when the red light is showing.
mustn't
200
You ____ eat a lot of chocolate. It isn't good for your teeth.
mustn't
200

You ____ go to the doctor if you are ill. (CAN, MUST)

must

200
You ____ wear a swimming cap in the comunal swimming pool.
have to
200
The exams are next week. I ____ work harder.
must
200
Sorry, I ____ go now or I will be late.
must
300
The bus is coming, so I ____ hurry.
must
300

Anne _____ ride a bike because she is only three years old. (CAN, CAN'T)

can't

300

you ____ wait for me. I can ride all by myself later.

don't have to

300
You _____ forget your umbrella. It's going to rain.
mustn't
300
I ____ wear glasses because I can't see without them.
have to
400
People tell their children they ____ throw things in the street.
mustn't
400

You _____ play on the road. There are a lot of cars. (MUST, MUSN'T)

mustn't

400
You _____ read a lot of books if you want a degree in English literature.
have to
400
Students _____ listen to the teacher, or they won't understand.
must
400
I ____ see without glasses. I've got bad eyesight.
can't
500
You ____ cross the street without looking for cars.
mustn't
500
It's very hot. You ___ go swimming today.
can
500

Children _____  bring many books everyday.

don't have to

500
Soldiers _____ obey orders.
have to
500
ANTIQUES

Please feel free to come in. (No eating inside.)

You _____ enter.

You _____ eat inside.

dont have to; mustn't
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