7.33 So absorbed __ in his work that he didn't realize that she was coming up to him.

问题描述:

7.33 So absorbed __ in his work that he didn't realize that she was coming up to him.
So absorbed __ in his work that he didn't realize that she
was coming up to him.
A.he is B.is he C.he was D.was he
请说明理由,

选D.
看后面的时态是过去时,排除A,B.
介词开头完全倒装,选D.