Description

If possible, please provide a brief description of what is wrong with this exercise.

The "pu" may be overly specific, but is expressed in the English. Accepting the perfective "ba'o" might be a stretch though.

Diagnostics information (do not remove)

Exercise identifier: [courseId=grammar-intro_eng][lessonNumber=8][exerciseId=2061]
Exercise payload: {"shouldDisplayHint":false,"exercise":{"canonicalAnswer":"mi nupre lo nu ctuca do","sentences":[{"text":"I promised to teach you.","lojbanic":false}],"title":"Translate this sentence","type":"typing"}}
Attempted solution: {"text":"mi pu nupre lo nu ctuca do"}
Attempted solution was classified as correct: no
Validation payload: {"canonicalAnswer":"mi nupre lo nu ctuca do","correct":false}