问题
选择题
12.So absorbed__________in her work that she didn't realize I was behind her.
A．did she
B．was she
C．she did
D．she was
答案
答案：B
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12.So absorbed__________in her work that she didn't realize I was behind her.
A．did she
B．was she
C．she did
D．she was
答案：B