( )The teacher is so careful that he always loo( )The teacher is so careful that he always looks over his exam exercises to______there are no mistakes in them.A.look up B.make suere C.find out D.think about

( )The teacher is so careful that he always loo( )The teacher is so careful that he always looks over his exam exercises to______there are no mistakes in them.A.look up B.make suere C.find out D.think about
( )The teacher is so careful that he always loo
( )The teacher is so careful that he always looks over his exam exercises to______there are no mistakes in them.
A.look up B.make suere C.find out D.think about

( )The teacher is so careful that he always loo( )The teacher is so careful that he always looks over his exam exercises to______there are no mistakes in them.A.look up B.make suere C.find out D.think about
B .make sure 确保

B，意思就是这个意思

B

B