http://www.jiskha.com/display.cgi?id=1384923393
Your problem with the question is what you are assuming. Ms. Sue has already explained to you how to interpret that past tense verb. What don't you understand about her explanation?
I am so sorry about posting again but I still don't understand the social impact the airplane made at the time when it was invented...
2 answers
yes I understand her interpretation and I apologize for the inconvenience. I have figured it out now! Thank you so much Ms. Sue! I really appreciate your help! :)