【推荐1】我们的老师尽量提高声音以便自己能够被学生理解。（过去分词做补语）
Our teachers try to raise their voice to __________________________________________ .

【推荐2】全校师生积极参与了这次越野赛跑。
a. All the teachers and students ________ the cross­country running race.
b. All the teachers and students ________the cross­country running race.

【推荐3】从政者都善于为自己辩解，反驳别人的批评。
Politicians are skilled at_____________________.

【推荐1】“让我们看看谁先到那里去！”瑞秋一边叫着，一边飞快地蹬着车从珍妮身边冲过去。
“________” Rachel shouted, as she pedaled fast and zoomed past Jenny.

【推荐3】我有一个喜欢音乐的朋友。
I have a friend ________ ________ ________.

【推荐1】Even though life is difficult, you may find that you are surrounded by friends who care about you. (同义转换)
Even though life is difficult, you may find ______ by friends who care about you.