我国古代集大成的戏剧理论家是（ ）
A．李渔
B．李玉
C．沈璟
D．朱有墩
参考答案：A
His mother looked very tired，for she _____ the house herself all day.
A．had cleaned
B．has been cleaning
C．had been cleaning
D．has cleaned
属于国务院组成人员的有
A．国务委员
B．审计长
C．国家税务总局局长
D．国务院秘书长
E．教育部部长
