What is the mistake in these sentences?

[Kyliesummers]

1.He picked up all the pieces of broken glass and put it in the dustbin.

2. I love this museum. My aunt brought me to one last week but it wasn't as nice as this one.

Please can someone point out the mistakes and explain why it's wrong? Thank you.

[Calis]

1.He picked up all the pieces of broken glass and put it them The thing "them" here refers to (its antecedent) is plural, therefore you need to make the pronoun plural in the dustbin.

2. I love this museum. My aunt brought took ("Brought" just doesn't sound natural) me to Putting just "one" after making its antecedent "this museum"; say "another one" one last week but it wasn't as nice as this one.

Please can someone point out the mistakes and explain why it's wrong? Thank you.

[Not a teacher]

[Kyliesummers]

thank you!