The problem is not _____ easy. Think _____ over. 怎么填?

The problem is not _____ easy. Think _____ over. 怎么填? The problem is not _____ easy. Think _____ over. A．such, it The problem is easy.I think you can do it by _____ Is ____ easy _____ out the maths problem? I think the new comer is easy to _____.选填 The maths problem is not easy to work out.怎么不可以用is not easy _____ is not easy to answer the questions. He is _____(在计算)the math problem那个空怎么填啊? He is _____(在计算)the math problem 那个空怎么填啊? The maths problem is not easy( ) I have much trouble _____ (solve) the problem.怎么填? how can I work out the problem _____(easy)