Weed something out

Meaning: 

When you weed something/someone unwanted or undesirable out, you get rid of them. You remove someone or something unwanted or undesirable from a group or collection.

Example sentence:

We must do our best to weed out this kind of immoral behaviour. It can't be tolerated in modern society any more.

Questions for you to answer:

1.      What do you think needs to be weeded out from modern society?

2.      What kind of misbehaviour should be weeded out from schools?

3.      Why do people want to get rid of weed?

4.      Try to come up with as many synonyms for weed out as possible.