Inter 6A (obligation, necessity, prohibition, advice)

She should sell her house. It's much too big for her.

She ... sell her house.

(a)  

Is it necessary to use a ladder? Can't you just stand on a chair?

Do you ... to use a ladder?

(a)  

I must remember to buy new light bulbs. I like to have some spares.

I ... forget to buy new light bulbs.

(a)  

You ought to be more careful. You've made ten spelling mistakes.

You ... be so careless.

(a)  

You can't mend it without a screwdriver. I'll go and get one.

You ... to use a screwdriver to mend it.

(a)  

It would be a good idea to buy rechargeable batteries. They're more eco-friendly.

You ... buy rechargeable batteries.

(a)  

You should eat less fast food. It's not good for you.

You ... to eat so much fast food.

(a)  

It's really inportant not to wash this jumper in the washing machine.

You ... wash this jumper in the washing machine.

(a)  

She ... buy some tools last week.

• had to

• must

• should

They ... drive. There's a bus that goes there.

• don't have to

• mustn't