Would you please talk in class? [ ]
A. don't
B. not
C. not to
D. won't
答案：B
George didn't pass the final exam. He _____, while his parents blamed the failure _____ the teacher. [ ]
A. was blamed; in
B. was to be blamed; with
C. was to blame; with
D. was to blame; on
我国主要的粮食作物是[ ]
A．小麦和玉米
B．小麦和水稻
C．玉米和谷子
D．小麦和花生
