Раскройте скобки, поставив глагол в соответствующую форму, используемую в условных предложениях 2 типа:
2.1 If I had this tool I (give) it to you.
2.2 If he worked more slowly he (not make) so many mistakes.
2.3 I could give you his address if I (know) it.
2.4 He might get fat if he (stop) smoking.
2.5 If he knew you were away he (not come).