не очень понимаю эту тему
Put the verb in brackets into the correct form of the passive
1 These books … very quickly if there's an advertisement (sell out)
2 My sister … by a dog last month (bite)
3 How much … water …? (pollute)
4 The play … by Shakespeare (write)
5 The table … (just lay)
6 Polar bears … for their fur (hunt)
7 The cups can..., be careful (break)