【单选题】 The son was so concerned about the illness of his father.
- A. serious
- B. happy
- C. lucky
- D. worded
网考网参考答案：D
网考网解析：
本题考查的是常见的形容词。concerned关注的，提心的；serious严肃的，严重的；happy高兴的，幸福的；lucky幸运的；worried担心的，焦虑的。所以正确答案为D。 查看试题解析出处>>
【单选题】 The son was so concerned about the illness of his father.
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