Question

1. Babies start to laugh when they are 10 weeks old-(make simple sentence.)
2. We learn to associate growing up with getting serious.-(find infinitive verb.)
3. Spend more time with people who boost your mood.-(rewrite  using -ing form of underlined word.)
4. Laughter is an inner jogging.-( Add question tag.)

Answer 1

1. Babies start laughing when then they are 10 weeks old.
2. growing
3.Spend more time with the people who are boosting you.
4. Is laughing an inner  jogging ?
hope this helps you........................   :)

Answer 2

The answers are :-
1. Babies start laughing when then they are 10 weeks old.
2. growing
3.Spend more time with the people who are boosting you.
4. Laughter is an inner jogging, isn't it?