can I use the past in the second sentence after now? “When I was a child, I was quiet. (2)Now when I grew up, I became social and more confident.” Thank you

Hello! Can you help me with this sentence? Which one is correct or more accurate: 1. I’ve had a good experience when I trained at .... 2. I’ve had a good experience when I was training at.... Thank you.

Can I say “this makes me positive”? Is using the verb ‘make’ is accurate here?

Hello, is this sentence grammatically and semanticall correct? “they go to the mall and buy through the mall” Thank you!

Hello there, Is this sentence correct? “ walking is good in all the kinds of weather” Thank you!

Is “feed on meat” in this sentence correct? “These animals are dangerous because they feed on meat” Thank you!

Can I use this preposition (on) like in this sentence: “Wasting time on (something)” Thank you!

Can I say: “breakfast is important to the body”? Or “for the body”? Thank you

I know that effect can be a noun and a verb with different meanings, but can I use effect in this question like this:“ Do you think social media effects our life?” Thank you