1your bags mustn't be left in the hall
2The postcards of N.Y.are(were) shown to us
3The story of W. is (was)told the pupils by teacher
4Last year a few new subjects were studied by our students
5This building was built by an American architect.
6A lot of books are read by her every year
7How many houses were built here last year?
8Cotton is grown in the south of the country
9When were the prices increased?
10The order should be made before the next month.