1．While they were busy，the referee，standing behind the plate，spoke casually to the boy. (完形填空第三段)
当他们忙碌着的时候，裁判员在投手板后随意地说着什么。
(1)While Mary was writing a letter，the children were playing outside.
玛丽写信时孩子们都在外面玩儿。
(2)He fell asleep while (he was) doing his homework.
他做着功课就睡着了。
2．From then on，he played the game with a new confidence and power that quickly drew the attention of the parent team，...(完形填空第四段)
从那时起，他打球有了新的信心和力量，很快引起了总队的注意，……
