D.shànglai上来, indicating having the knowledge to do something.

 

4.1.1  Lǎoshī wèn wèntí dōu méi huídáshànglai. 

老师问我的问题我都没回答上来。

          I failed to answer any of the teacher’s questions.

          Note: 4.2.1 and 3.2.1 are the same in meaning. They are interchangeable.