Sure, let's break it down:

I. Choose the word that has the underlined part pronounced differently from the rest:

1. A. cloud
2. A. gather
3. A. tooth
4. A. thirty
5. A. mouth
6. A. them

II. Find the word that has a different stress pattern in each line:

1. A. planet
2. B. picture
3. B. symbol
4. A. wireless
5. C. mountain