—Why didn’t Sally play the violin at the concert last night?

—She said that her hand hurt, but that was only a(n) _______. I saw her play tennis just now.

My mother used to ask me, “What is the most important part of the body?” When I was young, I thought   16   was very important to us, so I said, “My ears, Mommy.” She said, “No. Many people are deaf but still live a  17   life; keep thinking and I will ask you again.”

Several years   18  before she asked me again. This time I told her, “Mommy, sight is very important to everybody, so it must be our eyes.” She looked at me and told me, “You are  19   fast, but the answer is not correct. Many people are blind, but they still live happily.” Over the years, she asked me many times and always her answer was, “No. But you are getting   20   every year, my child.”

Then last year, my grandpa died. Everyone was crying. When it was our turn to  21   our final goodbye to him, my mother asked me, “Do you know the most important body part yet, my dear?” I was  22   when she asked me this. I always thought this was a game between her and me. I saw her eyes with tears. She said, “My dear, the most important body part is your shoulder (肩膀).” I asked, “Is it because it  23  up my head?”  She replied, “No. It is because it can hold the head of a friend or a relative (亲戚) when he or she  24 . Everybody needs a shoulder to cry on sometime in life, my dear. I only hope that you have enough love and friends, so you will  25  have a shoulder to cry on when you need it.” That was when I realized what the most important body part is.

She _______ be here . I saw her come in.

A. can  B. may  C. should  D. must

— Where’s Lucy ? —  She ________ in the office. I saw her there just now.

A．can’t be         B．must be           C．can be            D．should be