单词拼写

1. You can spread joy and happiness with a bright s 　   　.It's one of the best gifts that you can give to others.

2. The students will put on a new play about f 　   　against COVID﹣19 tomorrow evening.

3. China has passed a law to 　   　 （ 保护）the Yangtze River，which is the longest river in our country.

4. You must be 　   　（小心的）when a stranger asks about your personal information.

5. To celebrate the 100th anniversary of the founding of the Communist Party of China，our school plans to have some educational 　   　（活动）.