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
100

At school, we ____ wear uniforms.

have to

100
You ____ turn on the central heating. It's automatic.
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.
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't
300
you ____ wear snow boots when it snows, but your feet will probably get wet.
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.
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
The roads are completely clear of snow, so you____ put snow chains on your tyres.
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