16. Don't look now, but I think we . (follow) 17. Hello, police? I'd like to report a theft. My handbag . (steal)
18. 'Why did you take the bus?' 'My car .' (repair)
19. I think someone's been in my room – some books . (move)
20. 'There's nobody here.' 'No, all the students home.' (send)
21. 'When you .' 'Tomorrow morning.' (interview)