阅读下面短文，从短文后各题所给四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
I wrote my first note to my mother and it said, "Hi, Mom! Have a
nice day! 1, Marie!" I was twelve when I wrote
it, and I 2 the note into her change purse (零钱包). My mother worked 3 a cleaner in a clothing factory. I knew that
when she bought meals in the dining hall, she had to 4 changes in her purse. I didn't know that she
always kept that note, and carried 5 with her.
After that, I 6 folded the small piece of paper into my
mother's change purse, she and I left each other secret notes. My mother
usually hid her notes in the fridge, under a lamp 7 beside the TV set. I even found one hidden in
my shoe. Gradually, I understood 8 notes became the records of our days, ideas
and wishes. But to my mother and me, they were a life-long communication with
each other that 9 else shared.
On October 20, 2018, my mother 10 after an illness. I stood near her bed,
holding her hand. I didn't cry on that day when my mom passed away (去世). A week 11,
I even didn't cry. I was so thankful 12 she no longer had aches and pains.
Recently, I13a note that my mom left me. It was hidden
in the pages of my favorite childhood book for years. It14"Dear Marie, I love you always. Miss
you a lot. Don't forget me. Be15! Love,
Mom" That day, I cried.
