Obligation, permission, prohibition

You ... use this product without protection.

• aren't meant

• 'd better not

• aren't supposed

• may

You ... go to the ceremony if you don't feel like it. It'll be very boring anyway.

• mustn't

• haven't to

• don't have to

• must

We took too much risk. We ... that decision.

• needn't have made

• mustn't made

• shouldn't make

• should make

He ... so much money on the trip last summer.

• didn't need to spent

• didn't have spent

• shouldn't have spent

• should spend

He ... the bus because his brother picked him up at the station.

• didn't need to take

• needn't have taken

• shouldn't have taken

• should take

The refugees ... to work outside the camp.

• had better not

• are not allowed

• mustn't

• must

We couldn't find a hotel so we ... in the car. It was so uncomfortable!

• must have slept

• should have slept

• had to sleep

• can sleep

You ... forget to take your medicine.

• ought not

• mustn't

• don't have to

• have to

We ... early because It was a holiday, so we slept till late.

• needn't get up

• didn't have to get up

• needn't have got up

• need get up

You ... call me as soon as you arrived. I was very worried!

• were meant to

• were supposed to

• should

• must