1. (2018高二上·惠来月考) 阅读下面短文，从短文后各题所给的四个选项（A, B, C, D）中，选出可以填入空白处的最佳选项。

    One night, when I was eight, my mother gently asked me a question I would never forget. “Sweetie, my company wants to 1 me but needs me to work in Brazil. This is like your teacher telling you that you've done 2 and allowing you to skip a grade(跳级), but you'll have to 3your friends. Would you say yes to your teacher？”She gave me a hug and asked me to think about it. I was puzzled. The question kept me 4 for the rest of the night. I had said “yes” but for the first time, I realized the5 decisions adults had to make.

    For almost four years, my mother would call us from Brazil every day. Every evening I'd 6 wait for the phone to ring and then tell her every detail of my day. A phone call, however, could never replace her 7 and it was difficult not to feel lonely at times.

    During my fourth grade Christmas break, we flew to Rio to visit her. Looking at her large 8 apartment, I became 9 how lonely my mother must have been in Brazil herself. It was then 10 I started to appreciate the tough choices she had to make on 11 family and work. 12 difficult decisions, she used to tell me, you wouldn't know whether you made the right choice, but you could always make the best out of the situation, with passion(热情) and a 13 attitude.

    Back home, I 14 myself that what my mother could do, I could, too. If she 15 to live in Rio all by herself, I, too, could learn to be 16. I learnt how to take care of myself and set high but achievable17.

    My mother is now back with us. But I will never forget what the 18 has really taught me. Sacrifices(牺牲) 19 in the end. The separation(分离) between us has proved to be a 20 for me.