重点句子检测 根据汉语意思翻译下列句子，每空一词。
1. 周末，志愿者经常帮忙在山里搜寻失踪人员。
On weekends, volunteers often help to in the mountains.
2. 保持冷静是成功救援的关键。
Keeping calm is successful rescues.
3. 她做志愿者已经有几年了。这段经历帮助她变得更加自信。
She a volunteer for a few years. The experience has helped her become more confident.
4. 我妈妈总是提醒我要关爱老人，帮他们排忧解难。
My mum always reminds me to the elderly and help them out.
5. 每年秋天，我们社区都会号召大家清理公园里的自然区域。
Every autumn, our community calls on people to natural areas in the park. |

1. search for missing people 2. the key to 3. has worked as 4. care for 5. clean up

【解析】
1. “搜寻失踪人员”对应的固定短语是search for missing people，help to后接动词原形，故填search for missing people。
2. “……的关键”的固定表达为the key to，故填the key to。
3. 根据“已经有几年了”可知句子用现在完成时，“担任志愿者”用work as a volunteer，主语she是第三人称单数，助动词用has，故填has worked as。
4. “关爱”对应的固定短语是care for，remind sb. to后接动词原形，故填care for。
5. “清理”对应的固定短语是clean up，call on sb. to后接动词原形，故填clean up。
【答案】
1. search for missing people
2. the key to
3. has worked as
4. care for
5. clean up
【知识点】
动词短语、现在完成时、固定句型
【点评】
本题围绕志愿者服务等生活场景，考查英语动词短语、现在完成时及固定句型的实际运用，注重对基础语言知识应用能力的检测，帮助学生提升在语境中使用英语的能力。
【难度系数】
0.7