阅读下面短文，掌握其大意，然后从每题所给的A、B、C、D四个选项中选出一个最佳选项。
"Double 11" is coming. Many people say it's Bachelor's Day(光棍节) because it's named after the 1 November 11th. For most young singles, it's such a special day that they usually 2 lots of shopping online to celebrate themselves. They are happy because they are free.
Whenever the day comes, I think of my parents. I once doubted whether there was 3 between my parents. Every day they were busy trying to make money for my brother and me. They never act 4 the romantic ways that I read in books or see on TV. In their opinion, "I love you" is too 5 for them to say. Sending each other flowers on Valentine's Day is 6 more impossible.
One day, mom was sewing(缝纫) a quilt. I silently sat down beside her. "Mom, I have a question to ask you. Is there love between you and dad?" Mom stopped working and raised her head with 7 in her eyes. She never expected that I would ask her such a question. She didn't answer at once.
I was worried because I thought I had hurt her and didn't know 8 to do. She thought for some time and said, "Look at this thread(线). Sometimes it appears, but most of it disappears in the quilt. The thread really makes the quilt strong. If life is a quilt, then the love should be thread. It can hardly be seen 9 or anytime, but it's really 10 . Love is inside."
I couldn't understand her 11 the next spring, when Dad suddenly got sick seriously. Mom had to stay with him in the hospital for a month. When they returned, I read "love" in their hearts. After that, every day in the evening, mom 12 dad walk slowly on the country road. How 13 I was to see that!
Once I thought love meant flowers, gifts and sweet 14. But from this experience, I know life a lot 15. Love is life. It is inside, making life strong and warm.
，依据如上信息，完成下列各题。