1. When you go out, make sure that the door's locked, ok?
2. Doing a lot of exercise makes an improvement to your health.
3. When he moved to his new school it was really difficult for him to make friends with his new classmates.
4. It isn't very nice to make a mockery of other people.
5. Is that story really true? Or did you make it up?
6. They were making too much noise so I couldn't hear the conversation.
make- sense, money, an experiment
do- the dishes, a favour, time, well, housework
