Should/shouldn't & must & mustn't

Drivers ............cross the crossroads in their cars when the traffic light is red.

• ought to

• mustn't

• must

• should

You should ............vegetables before you cook them.

• wash
• be washed
• to wash
• washing

Vegetables should ...........before you cook them.

• wash

• be washed

• to wash

• washing

You must ........your mother with the house work.

• help
• be helped
• to help
• helping

Your mother must ........with the house work.

• help
• be helped
• to help
• helping

You ........smoke in a gas station. It is forbidden by law.

• must

• mustn't

• shouldn't

• shouldn

You...........go to the Pyramids when you are in Giza. It's great.

• mustn't
• need to
• should
• shouldn't

You .........leave pieces of food or dirty dishes lying around. They will attract flies.

• should
• mustn't
• ought to
• must

A: You .........drink any coffee. It's not good for your weak heart. B: Ok, doctor.

• mustn't
• shouldn't
• must
• should

It's dangerous to drive so fast. You ...........drive a bit slowly.

• shouldn't
• ought
• mustn't
• should