(1)
He bought a car, but sold it after a month.
{He sold the car which he
)
It is ten years since we moved to this town.
(2)
(Ten
(3)
(4)
) ( years
) a month ago ).
) ( have ) ( passed) since we moved to this town.
Mother began to look for her purse an hour ago and she is still looking for it.
Mother ( has ) ( been ) ( looking ) for her purse (for
I said to myself, "Who left the window open?"
I wondered (
) (
)(
) the window open.
) an hour.
