题目内容

用所给单词的适当形式填空。
1. We need to produce a lot of             _ (medical) to save those people who get HINI flu.
2. More and more parents are _          _ (worry) about their children playing computer games.
3. As a student, you should learn more            _ (know) from your teachers.
4. All the land was            _ (cover) by the white snow when we got up last Sunday.
5. I think playing computer games is not _            (help) to your study.
1. medicine
2. worried  
3. knowledge  
4. covered  
5. helpful
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