根据句意及首字母（汉语）提示，补全单词。
1. He used to b______ badly in class.
2. John has a______(问题)and I can't help them.
3. I am h______ than I should be.
4. She always feel s______ and tired. She should go to see a doctor.
5. When he was young,he got t______ a hard time living in the countryside.
1. behave 2. problem 3. healthier/happier 4. stressed 5. through
该题暂无解析
根据最新人教版版和牛津版的初中英语教材的词汇量，一个水平较高的初中毕业生的词汇量应在2400左右。初中的单词和词组词汇量要求数量会不断增长。
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