This chemical is poisonous. other ones are poisonous too.

find the mistakes in the second sentences and correct them:
1. this chemical is poisonous. other ones are poisonous too.
2. i don't want these books. please give me the other one.
3. i don't want this book. i want it.
4. ''finished?'' ''no, i've got the other three questions to do.''
5. we've still got other(= a further) forty miles to go.