Choose the correct item

We ......... wash our hands before eating so as not to get sick.

• must
• needn't
• can

You ......... wash the dishes. Doug has already done it.

• don't have to
• ought not
• mustn't

I ......... return the book to the library today or I'll pay a fine.

• ought
• may
• must

If you're on a diet, you ......... avoid eating junk food and anything that has too much sugar in it.

• should
• can
• could

Mum, ......... I have some ice cream after dinner, please?

• must
• can
• should

Students ......... to call the school if they miss a class.

• can
• should
• have

You ......... only eat at the restaurant if you are a guest at the hotel.

• need
• have
• can

If you're not happy with the gym you're going to, you ......... try coming to mine; it's very good.

• ought
• could
• need