选词填空

at ease, sense of touch, electric shock, stick to, prevent...from, apply...to, take steps, lead to

【小题1】His ______gradually took the place of sight.
【小题2】In the US about 100,000 people are given ______treatment every year.
【小题3】Not until the beginning of the 20th century did people learn how to _____the disease _____spreading.
【小题4】As long as you devote your energy to your study and ______it, you will surely succeed.
【小题5】Two analyses now show that poor air quality can ______a heart attack.
【小题6】Under the leadership of the Communist Party of China, Chinese people are now living _____.
【小题7】We should encourage students to _____what they have learned in class _____practice.
【小题8】After you have identified the root cause, you can then _____to resolve the issue.