Ex. 17. Choose the best alternative to complete the sentences

1. The conductor___ check up tickets of all the passengers before the train departure.

a) will be allowed b) can to c) is to d) have to

2. It is a non-smoking carriage. You _____ smoke here.

a) must not b) should c) will be able to d) are allowed to

3. You ___ change trains in Moscow because there is no direct train to Minsk.

a) shouldn’t b) could c) will have to d) is be able to

4. Until the 19^th century, people ___ travel freely between most countries without a passport.

a) are allowed to b) were to c) should d) were able to

5. The train ___ arrive at 5 p.m. but it detained because of track repair work.

a) should b) had not to c) was able to d) was to

6. The train ___ depart from the station, as the line was busy.

a) couldn’t b) isn't allowed to c) wasn’t to d) weren't able to

7. They ___ leave yesterday because there were no tickets available for today’s train.

a) were able to b) had to c) could d) was allowed to

8. Airline passengers ___ use mobile telephones during the flight.

a) are able to b) aren’t allowed to c) were to d) shouldn't

9. Passengers ___ keep their tickets till the end of the trip.

a) had to b) should c) are able to d) were to

10. Next year, the railway ___ increase the train fares because of inflation.

a) should b) won’t be able to c) can d) will have to

11. The suitcase was so heavy that Robert ___ change it from hand to hand all the time.

a) were to b) will be allowed to c) had to d) was able to

12. You ___ leave your luggage in the left-luggage office.

a) has to b) are able to c) should to d) was allowed to