Although she has a lot of problems，she manages to remain _____.

A. optimistic
B. cautious
C. concerned
D. anxious
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科目：高中英語 來源：陜西省同步題 題型：單選題

Although she has a lot of problems，she manages to remain _____.
[     ]
A. optimistic
B. cautious
C. concerned
D. anxious

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