please tell me if they are correct.

hi,

i would be really grateful if you corrected these sentences. ok here they are:

she was scared, cause she hadn't done her homework. At that time she was playing with her pc.

and:
Tom was a bad boy. his father had told him to tidy his room, but he didn't have time, so he hadn't done anything.

thank YOU very much

[Tdol]

I'd say something like this:
She was scared, because she hadn't done her homework; she had spent the time playing on her pc.


Tom was a bad boy. His father had told him to tidy his room, but he didn't have time, so he hadn't done anything.

This is OK to me, but the tenses at the end might be better if they were consistent:

Tom was a bad boy. His father had told him to tidy his room, but he hadn't had time, so he hadn't done anything.

Tom was a bad boy. His father had told him to tidy his room, but he didn't have time, so he didn't anything.

Of the two, I prefer the past simple version.