问题
选择题
With his attention _____ the blackboard, he didn't notice me when I came in.[ ]
A. fixed with
B. fixing in
C. fixed on
D. fixed to
答案
答案：C
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With his attention _____ the blackboard, he didn't notice me when I came in.[ ]
A. fixed with
B. fixing in
C. fixed on
D. fixed to
答案：C