问题
选择题
How_____ those boys are singing! They are all very______.[ ]
A. happily; happy
B. happy; happy
C. happy; happily
D. happily; happily
答案
答案：A
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How_____ those boys are singing! They are all very______.[ ]
A. happily; happy
B. happy; happy
C. happy; happily
D. happily; happily
答案：A