You …take off your shoes if they are clean. (DOESN’T NEED; DON’T HAVE TO; MUSTN’T)

Students … turn off their mobiles during lesson or the teacher will take them away. (MUSTN’T; NEEDN’T; MUST)

You … go to the check-in desk if you have checked in online. (DOESN’T HAVE; NEEDN’T; MUSTN’T)

In most Arab countries, you … eat with your left hand. You should use your right hand (NEEDN’T; HAVE TO; MUSTN’T)

When you're driving, you … stop if someone steps onto the pedestrian crossing. (MUST; DON’T HAVE TO; NEED)

We … eat at the new Chinese restaurant in town. I’ve heard it’s really good. (MUST; MUSTN’T; NEEDN’T)

We … wear school uniform at Optima school. (HAVE TO; NEEDN’T; MUSTN’T)

You … talk in the exam. (DON’T HAVE; MUSTN’T; NEEDN’T TO)

(ВСТАВИТЬ СЛОВА В СКОБКАХ НА МЕСТЕ ТОЧЕК)