PP TEST-2 65.70. 请教

sihua

65. Photographer Edward Steichen constantly

   experimented new techniques and materials

   in his quest to have photography accepted

   as a creative art.

                         A

70. Education in the United States is overseen by local

   school districts, which follow regulations mandated

   by their respective state government.

                             

                         D

请问怎么改

zhoushao

回来晚了，偶们马上要关网，明天早上给ＪＪ回帖

perryyu

experiment 作为动词用时为不及物动词，后必须加with.....

respective ：各自的。后加可数名次复数。（固定搭配）

sihua

thnaks a lot

zhoushao

三楼的ＧＧ好快呀