1) Wonderful discoveries were made by Russian scientists.
2) The opera "Ivan Susanin" was composed by Glinka.
3) Large guantites of coal will be produced by this mine.
4) The village is connected with the town with a railway line.
5) Who has this book been written by?
6) This theatre was designed by a well-known architect.
7) The text is read aloud by the students.
8) The student's composition will be corrected by the teacher.
9) The steamer is being discharged by the workers.
10) The letter has just been signed by the director.