Using Conditional 2 or 3. 1. The environment (be)____ much cleaner if people (not...

Question

Using Conditional 2 or 3.
1. The environment (be)____ much cleaner if people (not use)____ so many chemicals.
2. I (help)____ if I (have)___ more time.
3. If people (not drop)____ so much litter, our streets (be)____ so tired.
4. I (go)____ to the cinema tonight if I (not be)____ so tired.
5. If I (know)____ you were ill, I (visit)____ you.
6. She (not disturb)____ if it (not be)____ that important.

Answer 1

1. would be, didn't use
2. would help, had 
3. didn't drop, would be ( здесь, похоже, неправильно задание дано. Должно быть  much cleaner. )
4. would, weren't
5. had known, would have visited
6. wouldn't have disturbed, hadn't been