问题
选择题
47. ____ in thought, he didn’t notice me when I came into his room.
A．Burying
B．Buried
C．Put himself
D．To be set
答案
答案：B
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47. ____ in thought, he didn’t notice me when I came into his room.
A．Burying
B．Buried
C．Put himself
D．To be set
答案：B