To guess its meaning is difficult for the kids 改成 _____ ____

To guess its meaning is difficult for the kids 改成 _____ ____ the math problem is _____ difficult for me ____ solve The problem is _____ difficult for me _____ solve. A．so; to _____ is very difficult to play the piano very well for the The English book for kids is the best of its kind ______. It is difficult for ____ (they) to finish the work without a The question is too difficult for ____ to answer.A.anyone(an The underlined word “attack” is closest in meaning to “_____ 单选题the maths problem is ____ difficult _____ 9. It is very difficult for a teacher to _____ ... it is difficult to fill the minds of kids with the idea that This problem is too difficult for us to ____