【推荐1】他如此疲惫以致于他无法在课堂上专注听课和做笔记。
He was so tired that he couldn’t _________ _________ listening or _________ _________ in class.

【推荐2】We can greatly improve our working efficiency by ___what we are doing. (专注于)

【推荐3】As students, we should ________________________(集中注意力于) our study. (根据汉语提示完成句子)

【推荐1】But spending too much time online is unhealthy and_________ other things in life.
但是在网上花太多的时间是不健康的，这使得集中精力于生活当中的其他事情变得非常困难。

【推荐2】When you concentrate on one task, you can get it done faster.(同义句转换)
= When you ________ ________ one task, you can get it done faster.

【推荐1】Our School English Newspaper is going to hold a writing contest．
→（1）_____________________________________________and arouse their enthusiasm for writing, our School English Newspaper is going to hold its annual writing contest．
→（2）An annual writing contest _____________________________________________by our School English Newspaper _____________________________________________and arousing their enthusiasm for writing．
为了丰富学生的校园生活，激发写作热情，我们学校英语报社将要举办每年一度的写作比赛。