题目

I used to be ashamed of my grandma. I know that's a 36 thing to say, but it was true until today, so I have to 37 it. The 38 started when my friend Katy found Grandma's false teeth floating in a glass on the bathroom sink. I was so used to seeing them that I 39 took notice of them. But Katy shouted, laughing and 40 to talk to them. I had to get down on my knees and 41 her to shut up so my grandma wouldn't 42 and get hurt. After that happened, I 43 there were a million things about Grandma that were embarrassing（令人窘迫）. Once she took Jill and me out to Burger King. 如图15：正方形ABOF的面积与正方形ADGH的面积之和为68，矩形ABCD的周长为20，函数经过点D，则=           。