Exercise 4:

1, The girl who is sitting by Jack is Mary.

The girl sitting by Jack is Mary.

2, The book which was bought by Mary last Sunday is very interesting.

The book bought by Mary last Sunday is very interesting.

3, Mary is the only student who was given scholarship.

Mary is the only student to be given scholarship.

4, John was the first man who left the burning building.

John was the first man to leave the burning building.

5, The students who didn’t come to class yesterday explain their absence to the teacher.

The students not coming to class yesterday explain their absence to the teacher.