______the room, a letter was seen lying on the desk.
–----Do you know our town?------No, this is the first time I here.A was B. have been C. came D. am coming
I my washing machine the whole morning. I must get it done before noon.
-----Where _ you_ ?------I got caught in the traffic, or I would have been here earlier.
A long time ago, I in the USA for two years.
So far the police no progress in the investigation of the case.