①what he want（wants） to get just is a car----wants√
②sometimes，the textbook is adopted for employed in school----√
③there are some accident happended often as raining----accidents＝√
④i have been spending some time on the work----√
⑤we should try to make my（our） environment better----our environment＝√
⑥recently，i spend some time to visit with some winners about their unforgetable things and learning experience----×
⑦nobody know（knows） whether he will attend the party tomorrow----knows＝√
⑧this house is just what they seek for----√
⑨the trouble is how can we gain some money----haw we can＝×
10.the trouble we is facing is how can we gain some money----are facing
11.today，people are more and more in depending computer to solve their trouble----√
12.i'm sorry to have heard you have lost a million dollars----to hear
13.somebody think it is impossible for these work finished in the end of this month----√
【14.】我想说的是，在奥运会上做志愿者对于年轻人是有意义的事。what i want to express is that to make a volunteer in the olympic games is meaningful for youngers----to be a volunteer
【15.】 我想说的是，在奥运会上做志愿者对于年轻人是有意义的事---what i want to express is that to get a work of volunteer in the Olympic Games is meaningful for youngers----√