Here are the answers for the exercises:

**Ex 1: Circle the word with a different stress pattern from the others**
1. **C. apply** - others have the stress on the second syllable, while "apply" has the stress on the second syllable but sounds different in rhythm.
2. **C. profession** - has different stress compared to the others which also have the stress on the first syllable.
3. **B. difficult** - has different stress, the other options have the stress pattern in different syllables.

**Ex II: Find the word which has a different sound in the underlined part.**
1. **D. encourage** - has a different sound compared to the others.
2. **C. climb** - has a silent "b," while the others have consonant sounds.
3. **A. students** - has a different "u" sound compared to the others.

Feel free to ask for anything else!