请认真阅读下面短文, 从短文后各题所给的A、B、C、D 四个选项中, 选出最佳选项。
Now that my mom is a single parent, I do my own 38 , make dinner and do extra chores around the house. 39 it was hard at first, I now recognize the positive 40 that this responsibility had on me. My mother gave me these chores and duties so that I would learn to become 41 and trustworthy.