1.   Fortunately parents can do a lot to tone down the aggressive behaviour.

2.   His parents often did without lunch or supper so that he could have more.

3.   So the sorceress wanted Rapunzel more than her parents did, or so it seems.

4.   The alternative is to sue the school, which parents regularly do over matters of questionable significance.

5.   What should parents do to help their children complete household chores?

6.   We made the decision which was right for us.

7.   Other parents must do the same.

8.   His parents did a double take when he came home with a tattoo.

9.   What will parents do without the electronic baby-sitter?

10.   The fact that the parents are doing their very best will be immaterial if a reasonable parent might be expected to do more.