1a) Tom switches off the lights.
1b) .
2a) Kirsten cleans the fridge.
2b) .
3a) The twins visit their grandparents.
3b) .
4a) Mr Cooper serves breakfast.
4b) .
5a) Mrs Coole turns off the machines.
5b) .
6a) I always do my homework.
6b) .
7a) Kira, Tamara and John attend Mrs Coole's dancing lessons.
7b) .
8a) Mrs Smith gives bad grades.
8b) .
9a) Kira doesn't empty the dishwasher.
9b) .
10a) John always uses the last piece of toilet paper.
10b) .
11a) We drink a lot of orange juice.
11b) .
12a) Lena mixes clothes of different colours in the washing machine.
12b) .
13a) Jonas always leaves his shoes in the entrance hall.
13b) .
14a) Annika always leaves her clothes in the living room.
14b) .
15a) They don't close the windows.
15b) .