阅读下面短文，然后从各题所给的四个选项中选出一个最佳答案。

    Peter and Jack are good friends. They 1 everything together. One day, Peter hurt his arm (胳膊受伤) when he was playing soccer. Three days later, Jack hurt his 2, too.

    "We are cool, right?" said Peter. The first week was 3. Peter and Jack didn't need to 4 in P.E. class. They didn't need to do 5 homework, either. The second week they 6 it was not so good. Many things were 7 to do with one arm. Peter couldn't play computer games. Jack couldn't fish. The third week they felt depressed (沮丧的) 8 they couldn't swim when they went to the 9 with their classmates. They had to watch others 10. Peter said to Jack, "I hope our arms can recover (康复) soon."