Jon was working / worked when I saw him yesterday.

1 That’s the seaside town which / where we had a family holiday.

2 I’ve studied English since / from I was twelve.

3 Have you seen / Did you see the new film at the cinema yet?

4 The sign says ‘No Photography’, so you don’t have to / mustn’t use your camera.

5 What will / would you do if you lost your key?