So absorbedin her work that she didn’t realize I was behind her.A. had sheB. was sheC. she

问题补充：

So absorbedin her work that she didn’t realize I was behind her.

A. had she

B. was she

C. she had

D. she was

答案：

A. had she

(答案→)B. was she

C. she had

D. she was

解析：be absorbed in沉浸在；被……吸引；so…that结构位于句首，主句采用部分倒装结构。