13. You ever (drive) a car? – No, this is the first time I (drive) a car. 14. The tourists just (arrive) in London and everything (be) new for them. 15. He went back to his home town and was surprised that the town (change) a lot. 16. We are late. The performance already (start) by the time we get to the theatre.

13. Have you ever (driven) a car? – No, this is the first time I (have driven) acar.
14. The tourists have just (arrived) in London and everything (is) newfor them.
15. He went back to his home town and was surprised that the town (had changed) alot.
16. We are late. The performance had already (started) by the time wegot to the theatre.