问题
They were made ________ ten hours a day.
A:a, an
B:the, a
C:an, a
D:an, an;
B:the, a
C:an, a
D:an, an;
正确答案是：
同类题型
Tom’s never done extra work for his class,_______he—_______. He is the laziest boy in his class.
Did they clean the house yesterday—— _________. They cleaned it at five.
To enjoy the view on the way, Mary would rather spendlong hours on the traintravelby air.