问题
Where have you been recently?—I ________ in Beijing on business for a week last month.[ ]
A: have worked
B: was working
C: have been working
D: worked
B: was working
C: have been working
D: worked
正确答案是：
同类题型
There’s only ten minutes to goWe can’t wait any more- ______, we should start at once[ ]
My alarm clock doesn’t work now. Could you help me fix it– ．
In this country, children under 12 must be _____ by an adult in public libraries.
According to the time table , the train for Beijing______ at seven o’clock in the evening