问题

Sometimes I work __the daysometimes__night.
A:in; at
B:at; in
C:at; on
D:on; at
B:at; in
C:at; on
D:on; at
正确答案是:
同类题型
She had a computer at home, and her parents desired that she all her work at home.[ ]
Would you please go and ______some waterfor me I am thirsty.
Though computers can do a lot of work man can’t do, they can’t completely _______ human beings.