Here are the correct forms of the bracketed words:

1. What **should we do** with our friends in our leisure time? (act)
**Answer:** activities

2. You can write about some **differences** between city life and country life. (differ)
**Answer:** differences

3. He hates **loading** rice from the truck because it’s quite laborious. (load)
**Answer:** loading

4. We just can’t bear our new classmate. The guy is so **unfriendly**. (friend)
**Answer:** unfriendly

5. Foreign tourists are impressed with the **hospitality** of the local people. (hospitable)
**Answer:** hospitality