do you know the a____to this question
do you know the a____to this question
do you know the answer ( ) this question
Do you know the answer of this question?(改错~)
do you know the answer .no,this question is
Do you know the to the question?
Do you know the question n___ three?
Li Ming ,do you know the answer of this question?(改错)
1、Do you know the answer____ the question.
Do you know the answerof the second question?
A question.Do you know?
Please _____if you know the answer to this question
Do you know the answer____the question?介词填空