Mark the interjections in the following sentences. Notice those which
express emotion and those which imitate sound.
1. Oh! Is it possible.
2. Hurrah! We have good news at last.
3. Whirr! Whirr! goes the giant machine.
4. Come! Keep up your courage.
5. What! I cannot believe it.
6. Courage! We shall yet win.
7. Bravo! Let those words ring down the centuries.
8. Ding-dong! the bells ring out the hour!