Ⅰ. 根据句意及首字母或汉语提示完成单词（10分）
1. The b_____ is ringing; we must enter the classroom.
2. We must obey the r_____ of the traffic.
3. Our English teacher is very p_____ and friendly to us.
4. A car _____ (急速行驶) past me on my way to school.
5. A player _____ (掉) his stick on the ground at the sports meeting yesterday.
Ⅱ. 用所给词的适当形式填空（10分）
1. You don’t need to worry about your children’s _____ (safe). We’ll take good care of them.
2. Ivan is so _____ (care) that his homework is always full of mistakes.
3. Remember, if you have a serious _____ (injure), see a doctor as soon as possible.
4. Can you guess the _____ (high) of the tree?
5. The surface of the road is too _____ (ice) to ride a bike on it.
