it much diffcult to control the quality when refinish

题目

it much diffcult to control the quality when refinish
我这句话,
我就是要用MUCH来说这句话,而且不要MUCH TOO的词组!也不需要VERY 来替代!
我没有分了,请各位知道我哪里错了,提示,

答案

it has much difficulty to control...