Please answer the following questions.
1. Is this the correct use of a semicolon? I don't think the clause after the semicolon can stand on its own.
When did you last hear about it? Some said never; others said not since they left home.
2. Why is it have to be past perfect? Is that because there is the word 'before'? How does it affect? I think the past tense would work well too. Can the present perfect tense work here?
1. It can be used to help parents reach their children in ways they had never imagined before.
I think this can be rewritten into this:
2. It can be used to help parents reach their children in ways they never imagined before.
3. It can be used to help parents reach their children in ways they never have imagined until now.