Some of the people often ask the same question the air has been polluted.
Although ______ for many years, the two old sisters recognized each other at once.
He lay in bed, with his eyes ______ up at the ceiling and his fingers ______.
—______? —Yeah, it seemed a little confusing to me at first, but now I get it.
It is reported that the police will soon ____ the case of two missing children.
A. notice was_______in order to remind the students of the changed lecture time.A. sent up B. given up C. set up D. put up