I know the answer 改为否定句

I know the answer 改为否定句 i want know the answer I don't know the answer to the question.改为同义句 The man I don't know didn't answer my questions.(改为同义词） 英语翻译i know the answer thanks I think Tom___(know)the answer. I think tom___(know)the answer. both of them know the answer改为同义句,求教 I know the answer.(一般疑问句) ______ ______ know the answer? I'm sorry,but I don't know the answer. he may know the answer 改为同义句 _______he ____the answer 改为同义句：If you think hard,you'll know the answer.______ ______,______ you'll know the answer. I want to know ____ it is the right answer. The only answer I know for sure that is? I don't know the answer.It's d______. 做个题 The man I don't know didn't answer my questions.(改为同义句) The（）didn't( )( )my questions大家帮下忙~~~ I think the answer is right(改为否定句)急 I can answer the questions.怎么改为一般疑问句