elearn site

1. The teacher rubbed out the words which he had written on the blackboard.
The teacher rubbed out the words . 

2. James did not need to register for the new course.
It was not . 

3. People, who exercise frequently, have greater physical endurance than those who don′t.
People who . 

4. It was difficult to persuade Rick to buy the book.
I had . 

5. I′m sorry I didn′t come to see you earlier.
I wish .