问题
What were you doing at this time yesterday? —I ______ on the grass and playing with Tony.
A:sit
B:sat
C:am sitting
D:was sitting
B:sat
C:am sitting
D:was sitting
正确答案是：
同类题型
Did he write all the articles _________ or did anyone help him?[ ]
Do we look the same?—Yes．There are no differences between _________．
The fish smells ________! It must be out of date!
It was last year _____ I visited the museum _____ you had visited.
I’m sorry. I _____ your printer for such a long time. —Never mind.