I need a hand with an English message. Could you gimme a hand? I'm personalizing a gift for my professor and I'm a little bit confused with the message. Which one is better grammatically?: 1) We are THANKFUL for... your teachings that touch our lives forever. 2) We are THANKFUL for... your teachings that touched our lives forever. 3) We are THANKFUL for... your teachings that have touched our lives forever. Thx for your support.