问题详情：
根据句意及汉语提示填写单词。
1. Mr. Wang is ________(幽默的). He often makes us laugh.
2. Now pollution is a ________(严重的)problem.
3. Lily used to be quiet, but she is very ________(开朗的)now.
4. Mary got the highest ________(得分)on the exam.
5. Don't eat much junk food. You should ________(改变)your eating habits.
【回答】
1. humorous 2. serious 3. outgoing 4. scores 5. change
知识点：单词拼写
题型：单词拼写
