6.
2. a restaurant, school; 3. a bus, a taxi; 4. a shower, lunch; 5. a new shirt, shoes; 6. a play, a film; 7. back, home; 8. at six o'clock, at 5.30; 9. down, on a bench.
7.
buy - bought; read - read; take - took; have - had; leave - left; sit - sat; get - got; see - saw.