The work is easy to do还是 to be done 如题

The problem is easy enough for us to work The maths problem is not easy to work out.怎么不可以用is not easy to be worked the work is not to easy to [ ]you.a for b as c so d to It is not ()(困难的）to finish the work .It is easy. The work is easy.It is p_____ for me to finish it in an hour To finish the work is not easy.to可以省略吗?为什么? The work is easy to do还是 to be done 如题 The,question,is,easy,to, the proble is different.I can't work it out the problem isn't easy ()for ()to work out This is very easy to work out the math problem.有什么错? the work ____(it) is easy.but we have no time to do it now. The work is not easy ______.A.doing B.to do C.do D.does he problem is very easy. They can work it out. (合并) The problem is easy __ for __ to work out. The maths problem is not easy enough for him to 是work out还是work it out 为什么 the maths problem is ____ easy for us to ___.A,too,work it out B.too,work out C,so,work out itD.very,work out为什么 to finish the work in ten days is notto finish the work in ten days is not an easy thing.同义句 横线is not an easy thing两个横线 the work in ten days The problem is （ ）.We can （ ） work it.A、easy;easy B、easy;easily This work is easy enough to him do