Here are the responses for the sections you provided:

**I. Circle the word whose underlined part is pronounced differently in each line:**
1. A. cruel
2. B. truth
3. C. chair
4. D. future
5. A. handbook
6. C. cartoon
7. D. firewood
8. B. digest

**II. Find a mistake in the underlined parts (A, B, or C) in each sentence below:**
1. A. happier
2. B. less
3. A. moved
4. C. therefore
5. A. making

**III. Complete the sentences with the words from the box:**
1. muscle
2. poultry
3. cattle

**IV. Give the correct form of the verbs in brackets to complete the sentences:**
1. Many people think living in the city is more stressful than in the countryside.
2. My sister’s best friend is a Buddhist monk in the nearby pagoda.
3. P is a picture taken during the Vietnam War. It stands for its amazing scenery.
4. She is learning how to (load) the grocery bags from the car.
5. It’s good to know things in theory, but you need to improve your (practice) skills too.

Let me know if you need any more help!