we _______ walk or cycle to school

we ______ use recycled bags

we _______ cut down trees

we _____ waste water

we ______ turn off tap while washing our hands

we ______ sort the garbage

we ____ have showers instead of baths.

You ....make a lot of noise in the hospital

You ... switch your mobile phone on the plane.

You .... smoke in petrol station

You ... be rude to your parents

You ...do your homework regularly.

You... obey the traffic rules.

You ---------- watch TV too late in the evening.

You ---------- be friendly to your grandparents.

You ---------- feed your pet every day.

You ---------- keep your room clean and tidy.

You ---------- help in the kitchen.

You ---------- play video games all weekend.

You _______ stop.

You ______ drop litter.

You ______ turn right

You _______ park here.

You _____ drive slowly.

You _____ make a U-turn.

There are trains here! You _____ cross.

Cyclists ______ enter.

What does should express?

What does must express?

What do you do if the light are red?