想了很久了,he is to do his work well.怎么来的.

想了很久了,he is to do his work well.怎么来的. ＿＿it is for us to see that he does his work so well! He is confident that he will try his best to do extra work My brother is s____in his work ,and he does well Mr.Smith always takes _______ to do his work well. () it is difficult,he tries his best to do it well.填空 My father is very busy with his work.He has _____ time to do His brother is ill.So he has to do some e()work David has( )much work to do that he is staying late at his o but he was u(------)to do his job well He always ___________ ( try) his best to do everything well He is going to look after his grandma well.怎么改成同义句?