Good for ... good for ... Can you tell me the meaning and usage of these three phrases?

Good for ... It means: beneficial to ...

Usage:

Me? Used to be. Thinking? It? Will it? Is it? Okay? For what? Bob. ?

I always thought it was good for Bob.

2. Make good use of means: smart; Get along well with ...

Usage:

What? Must? Is it? Okay? With what? Kids. ?

He must get along well with the children.

Right ... good? Be friendly to ...

Usage:

Eating more vegetables is good for your health.

Eating more vegetables is good for your health.

Be good at/be good at/

Be good for

Be good is followed by different prepositions with different meanings.

References:

Baidu encyclopedia-English grammar