1.

to look after someone's children while they are out.

2.

to make someone change their beliefs or ideas by a system of repeated forceful persuasion.

3.

to smoke one cigarette after another without a break. [Please, note that the compound regular verb CHAIN–SMOKE takes a hyphen]

4.

to think about pleasant things that you would like to happen.

5.

to visit the interesting places that tourists usually go to.

6.

to thoroughly clean everything in the house, especially those things which you do not clean very often.