2: a question

3: the best

4: the airport

5: a postcard

6: a ticket; the concert

7: the name; the director; the film

8: a jacket and a shirt; the jacket... and the shirt...

9: a boy and a girl; the boy... and the girl...(вторичное употребление, значит опред. артикль)

63.3

3- a bicycle

5- the roof

6- the play

7- a difficult language

8- a cigarette

9- the next train

10- a nice day