属于Kennedy第二类第一亚类的是()

A．右侧上颌第一、二前磨牙、第一磨牙、左侧上颌第一、二、三磨牙缺失

B．右侧上颌中切牙、侧切牙、尖牙、左侧上颌中切牙、侧切牙、第二、三磨牙缺失

C．右侧下颌第二前磨牙、第一、二、三磨牙、左侧下颌中切牙、侧切牙缺失

D．右侧上颌中切牙、侧切牙、尖牙、第一前磨牙、左侧上颌中切牙、侧切牙、尖牙、第一磨牙缺失

E．右侧下颌中切牙、侧切牙、尖牙、第一前磨牙、第一磨牙、左侧下颌中切牙、侧切牙、尖牙、第一、二、三磨牙缺失

短文填空。

    At our school, we sometimes have a special day to help others. Last year, we went to an old 1.________

(people) home and sang songs and performed a play for 2.________(they). The old people 3.________(be)

very happy. We should be allowed to take time to do things like that more often. For example, we should visit

primary schools and help teach young students. I want to be a teacher when I'm older so it would be a great

experience for me. Other students would like other 4.________(job). For example, my friend Tian Ge wants

to write for a newspaper. She should 5.________(allow) to volunteer at the newspaper office once a week.