8岁初学钢琴用什么教材:work environment based on staff member's abillity

Does Delphi program work at Linux environment and how work environment based on staff member's abillity ► Promotes a “best on Wall Street” work environment 什么意思 He achieved his aim __B__ A.by hard working B.by hard work 为什么选B 哪句对，为什么？ A,my work is to teach them, B my work is teaching them. 哪句对，为什么？ A,my work is to teach them, B my work is teaching them. he has__much work to do A.too B.such选哪个?为什么? he has__much work to do A.too B.such C.so选哪个?为什么? Have you finished your work?—No()A.not yet B.not untilCalreadyDnever how to protect environment