1 . 选择并使用所给单词的正确形式完成句子，有三个词为多余。

stress       responsible       target       contribution       benefit origin       concentrate       tense       independent       measure

1. Sharing your bad feelings with someone you trust is __________ to both your physical and mental health.
2. Children __________ less than one meter can enter the park for free.
3. At the meeting he __________ the importance of a good education again, urging every child should have the right to get educated.
4. There is increasing __________ along the border (边界) between the two countries, which may lead to wars between them.
5. Zhong Nanshan was awarded the Medal of the Republic because he made great __________ to the fight against the epidemic.
6. Going away to college has made me much more __________, and I can manage my life and study well by myself.
7. If you don’t __________ your attention on work, you’ll achieve nothing.

2 . I concentrated my mind on the book and didn't notice my mother's appearance.
With ________ ________ ________ ________ ________ ________, I didn't notice my mother's appearance.

3 . 大多数学生饱受缺乏睡眠之苦，这导致他们在上课时无法集中注意力。（concentrate）(汉译英)