Nobody in our class knows the answer____the question.It is too difficult.填合适的介词

Nobody in our class knows the answer____the question.It is too difficult.填合适的介词
Nobody in our class knows the answer____the question.It is too difficult.填合适的介词

Nobody in our class knows the answer____the question.It is too difficult.填合适的介词
Nobody in our class knows the answer_to___the question.It is too difficult.
the answer to the question 习惯搭配

to
anwer to the question 问题的答案

on

to