Choose the right variant.
1) Passengers come to the airport an hour before the take-off time.
b) must
2) We usually go to the south by plane but tomorrow we travel three by train as we didn’t make a reservation for the flight.
c) shall have to
3) You phone me again, I never forget my promise.
a) need not
4) I take a bus because Martin gave me a lift.
a) did not have to
5) When the new road is built, I drive to work in under half an hour. Now I spend much more time.
b) shall be able to
a) have to
6) The pilot land the plane on only one engine.
tb) was able to
7) Airline passengers use mobile telephones during the flight.
b) are not allowed to
8) Stay here till she is free. I think you wait long.
b) will not have to
9) According to the rules a football player touch the ball with his hands.
c) must not
10) Luckily I find a taxi.
b) could
11) You shout, I am not deaf.
a) need not
12) The speed in cities exceed 60 km per hour.
a) shouldn’t
13) It is a non-smoking carriage. You smoke here.
a) must not
14) You carry your driving license with you.
a) should
15) You answer the question if you don’t want to.
b) need not
Объяснение: