1.   He did not raise the subject again.

2.   He had not raised the subject.

3.   He often raises that subject, and we understand his desperation about what will happen to his seat at the next election.

4.   He raises a subject that he has discussed with me.

5.   He seemed loath to raise the subject and I did not see why I should do so.

6.   He seemed loath to raise the subject.

7.   Jean-Claude raised the subject of a piano again.

8.   People tend to become emotional when the subject of the ordination of women is raised.

9.   She did not raise the subject again.

10.   Should staff raise the subject with all patients?