Optimise B2, Unit 5 - Grammar 1, Modals

You don't have to / mustn't come to the supermarket if you don't want to.

• don't have to

• mustn't

I won't be able to / can come on the walk unless I have strong walking boots.

• be able to

• can

Portia mustn't / shouldn't have left the window open. The room is freezing cold now.

• mustn't

• shouldn't

I didn't know your mum could / should play the violin so well.

• could

• should

My dad needn't have / didn't need to pick me up because I got a lift with Leo.

• needn't have

• didn't need to

One of the hottest developments for smartphones and tablets is augmented reality games. These games use computer graphics to augment, or improve, real world images which are captured by the camera on your device. You ​ (a)   download them on most mobile devices and in most cases, you ​ (b)   pay anything.

• can
• don't have to
• aren't allowed to
• could
• have to
• should
• shouldn't

My favourite game is called Scrimbles, which is a type of word game. You ​ (a)   find different letters and make words out of them to score points. You compete against other friends who are online so it's great fun. The only problem is that it's very addictive. The teachers at my school are quite worried about the effects so we ​ (b)   play it at school anymore. They say that if we play it, we ​ (c)   be on it for more than an hour a day. To be honest, I think they're probably right.

• have to
• aren't allowed to
• shouldn't
• can
• could
• don't have to
• should

Martine _ _ _ _ _ _ _ the kitchen. It was really dirty before we went out and now it's spotless.

• must clean

• has to clean

• must have cleaned

You _ _ _ _ _ _ _ the football match last night. It was the best one I've seen in ages.

• should have watched

• shouldn't have watched

• should watch

Debbie gets so much homework. She _ _ _ _ _ _ every evening.

• must to work

• must have to work

• must be working