简单说下原因
6,the_____of building the Great Theater ____ only one year A,job,spent B,work,spend C,position,took D,works,took 8,students should be encouraged to finish their homework _____.A,of themselves B,of their own C,for their own D,on their own 9,his letter was so confusing that I could hardly make any _____ of.A,explation B,meaning C,sense D,guess