Complete the sentences using the present simple passive form of the verbs

1.    This new type of bus_______(drive)by a computer. I think it’s scary.

2.    Passports_______(check) when you arrive in a new country.

3.    These days, train tickets_____(often/buy) online.

4.    The inside of a train_____(always/clean) before passengers get on it.

5.    Food______(not serve) on this train.

6.    The bus you’re waiting for_____(usually/delay) because of traffic

7.    Helicopters_____(not use) for long flights.

8.    ________the fish___(cook) in oil?