单项选择题

The son was so concerned about the illness of his father.

A. serious
B. happy
C. lucky
D. worded
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She was so grateful to him and decided to marry him.
A. careful
B. useful
C. hopeful
D. thankful
单项选择题
I don't why everything around me is going into confusion.
A. consideration
B. puzzle
C. attraction
D. contradiction
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