Our teacher is certain ___ who broke the windowA to know B know C knowing D knew

Our english teacher is > What is our teacher like? he is our teacher对 our提问 That man is our teacher.(对 our teacher提问） That man is our teacher.(对 our teacher提问） our English teacher is our the head teacher. She is our teacher,she is also our friend. Mr.Smith is our teacher.He is also our friend. He is our teacher.变成一般疑问句 Who's that man?( )is our teacher. Miss Gao is our English teacher 疑问句 our english teacher is miss johnson提问 our teacher is---------------------(help)to us He is our English teacher等于什么 We( )our math teacher,she is kind. Our math teacher is strict_us_our lessons.为什么? our teacher is ___late for school. Our math teacher is s(?) with us.