根据汉语完成句子（每小题2分，满分10分）人们数鸟以便记录它们数目的变化。
People count the birds to .为了能更清楚地看到鸟，我们最好带副望远镜。
We’d better see .我认为每个人都应该行动起来保护野生动物。
I think everyone should .那个动物园占地三万多公顷。
The zoo _________ ___________ __________ 30,000 hectares.看！那匹马正在树下闭着眼睛站着。
Look! The horse is .
To save people's lives，the doctors and scientists are risking their lives to do （医学的）research．
Our teachers often encourage us to face the difficulties （勇敢地） and try to overcome them．
When we are in danger， it's very important to make a good （决定）．
Make sure there are no （错误） in your test paper before handing it in．
Our head teacher always （鼓励） us to solve problems by ourselves．