It was the end-of-year party. I had asked my mother to make us cookies. Mom’s chocolate chips were the best.
But two o’clock passed, and there was no sign of her. Most of the other mothers had come and gone, dropping off their cakes and chips. The party went on, but I wouldn’t leave the window. The three o’clock bell soon took me away from my thoughts（思绪）. I took my bag and walked out for home.
The house was empty when I arrived. My heart was filled with anger(气愤). For the first time in my life, my mother had let me down. I was lying on my bed when I heard her coming. “Robbie,” she called out. “Where are you?” She was looking for me from room to room, but I kept silent.
When she came into my room, I didn’t move, “I’m so sorry,” she said. “I got busy and forgot.” She began to laugh. I couldn’t believe it. I turned over and found that she wasn’t laughing but crying. “I’m so sorry. I let my boy down.” she cried like a little girl. I had never seen my mother cry.
“It’s OK, Mom,” I said, “We didn’t need those cookies. There was plenty of food to eat. Don’t cry. It’s all right.” We held each other in a long hug(拥抱).
The story happened __________.

A．on my birthday	B．during Christmas
C．before Christmas	D．before the New Year’s Day

I didn’t leave the window because I want __________.

A．to see my mother coming

B．to enjoy the party

C．to get some cookies

D．to go to the party

What does the underlined phrase “let me down ” mean in Chinese?

A．让我下来

B．让我平静

C．让我失望

D．让我讨厌

I lay down on my bed and kept silent because I was __________.

A．tired

B．angry

C．hungry

D．excited

Why did my mother cry and say that she was sorry?

A．Because she was too busy.

B．Because she couldn’t find me.

C．Because she didn’t support me.

D．Because she needed those cookies.