问题

Has your friend completed his design – Not yet. He ________ on it last night.

A:worked
B:has worked
C:is working
D:was working;

正确答案是：

同类题型

The Huang River is the second __________river in our country.

Did Mark win the 100-meter race? — He did _____ I

I am not good at dancing, you know —- ______ It’s just for fun

time I got to the theatre, the play__________ for ten minutes.

____ will he be backIn a week.　