问题
选择题
Playing with a cell phone, he suddenly _____ the teacher staring at him. [ ]
A. knew of
B. became aware of
C. reflected
D. aware for
答案
答案：B
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Playing with a cell phone, he suddenly _____ the teacher staring at him. [ ]
A. knew of
B. became aware of
C. reflected
D. aware for
答案：B