He did not come and it added up to our difficulty.改错

His illness added much difficulty with our life.改错 请帮忙下改错：he did not say anything to her,and she did not speak what he did has added to our difficulties为什么用现在完成时 The greatest difficulty and do not give up,give up only to f She added sugar to her tea, It all adds up to this-he is a f It was not until midnight did he come back. _______ did he come to our school for last Sunday ---------(unforunately),he did not come to school too late What he did has added to our diffcatties.意思是 他所做的事增加了我们的困难 He tried not to take mixed up in politics.改错 Added to our It is necessary that he (should) come to our