Find the word which has a different sound in the underlined part

II. Find the word which has a different sound in the underlined part.
1. a. hobby b. hour c. humor d. hole
2. a. dynamite b. terrify c. deny d. sympol
3.a. thunder  b.earthquake c.gather d. healthy
4. a. dump b. nuclear c. bulb d. plumber
III. Choose the best one which fits the space to complete the sentences.
1. It isn't............hat. It's ........ .(mine, her)
2. .........books are here. .........are there. (ours, their)
3. These are..........shoes. Those are.......... .(yours, his)
4. This is........sister. That's............ (his, my)