Sure! Here are the correct options for the sentences:

**III. Circle the correct option to complete the sentences.**
1. The villagers are looking forward to a bumper **crop** this year.
2. The farmers often **plough** the fields and leave them for a while before planting new crops.
3. **Picking** apples is one of the favourite part-time jobs for those students.
4. Putting up a camp is not an easy task for the kids but they managed to do it.
5. In the city, the **pace** of life is far faster than in the countryside.

**IV. Choose the correct answer A, B, C, or D to complete the sentences.**
1. The **hostile** climate allowed the inhabitants to grow a variety of fruits.
2. Local people were unhappy because a/an **vast** area of farming land was turned into construction site, leaving them less land for cultivation.
3. Despite some **picturesque** aspects of living in the countryside, I find it an ideal place to escape from the city's noise and stress.
4. A **convenience**. The small town looks beautiful in the evening sunlight. You can hardly see a person or a vehicle.
5. A **tranquil**. The area around our small town is famous for its **picturesque** landscape. Things look old-fashioned and pretty.

**V. Complete the sentences with the comparative forms of the adverbs in brackets.**
1. I come back to my hometown **more often** than her.
2. You should drive **more slowly** when you enter residential zones.
3. To pass the coming exams, we are working much **harder** than ever.
4. In the countryside, people tend to wake up **earlier** than city dwellers.
5. He knows the countryside much **better** than the city since he has spent his life time here.

**VI. Choose the correct answer A, B, C, or D to complete the sentences.**
1. They have to wait for two weeks after they **irrigate** pesticides to pick the produce.
2. During the **harvest** time, farmers get up earlier and work harder than usual to collect the crops.
3. In the countryside, you can enjoy fresh and local **produce** that you may not be able to find in the city.
4. The inhabitants of the village live **more richly** now than in the past thanks to the better living conditions.
5. A **more comfortably**.
6. Cattle is a practice of caring for roaming cattle that people started to do 10,000 years ago.
7. A **Herding**.
8. Drivers have to speed down to avoid crashing into a **herd** of cows on the road.
9. A **school**.
10. Mr. Ha: I’m glad you have a bumper crop this year!
11. Mr Nam: Are you kidding? I **hope so**. I don’t think so. **Thank you**.
12. Traffic systems in big cities are normally **more complicated** to follow than those in the countryside.
13. **harder**. Tom: I really love the local craft you gave me yesterday.

Feel free to ask if you have any more questions or need further assistance!