根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Do you think of your parents? "Yes, of course," you may answer, "I buy a present for my mother on 1. And I give my father a present on Father's Day, 2. "Then what about the other days of a year? Always 3 to think of your parents, not just on some important days.

    I have a friend who 4 alone, because her parents live in another city. One day I went to see her. We had a nice chat. Then she wanted to make a 5. She dialed the number, but then she put the phone 6. After about ten seconds, she dialed the number again, "Hi, Mum……"

    Later I asked, "Why did you dial the number 7?" She smiled, "My parents are old. They can't get close to the telephone 8. I always do so when I call them. I just want to give them 9 time to answer the call."

    My friend is a good girl. She is always 10 her parents. You also want to be a good child, right? So why not learn from her?