Поставте глагол в правильную форму. if they (not to help) us we (not to find) the way. if she (to be) older she ( to understand) you better. nobody told me about your trouble. i (to help) you if l (to hear) about it. if i (to be) you i (have) a long walk in the park.
2. is/will understand
3. will help/hear
4. were/would have