She met many famous actresses when[ ]in the film
1个回答

D这句是个省略句,当从句和主句的主语一样,从句的主语可以省略,若为主动则直接省略主语(有BE也省略),若为被动,则把主语和BE省略,把谓语动词改为ING形式.此句为:She met many famous actresses when she [acted ]in the filmA 理由不太说得清.B BE DOING可表示将来,动作即将发生.第一个空填WHICH,因为非限定性定语从句不能用THAT引导,可以用其他引导词,如WHICH AS WHEN WHERE 等,在句中做主语,只能用WHICH.第二空天WHERE,因为引导地点壮语从句.