Here are the appropriate word forms to fill in the blanks:

1. The driver often causes accidents. He drives **carelessly**. (care)
2. They had a **lovely** seafood lunch in a restaurant. (love)
3. Mr. Hung went **shopping** last Sunday. (shop)
4. The tone of his letter is **friendly**. (friend)
5. These abbreviations are **commonly** used in writing letters. (common)
6. It is **impossible** to see her at this time. It’s too late. (possible)
7. I would recommend that you should be interested in reading **educational** books and magazines. (education)
8. It takes years of **practice** to acquire the skill of ballet dancer. (practise)
9. John is old enough to be **dependent** on his parents. (depend)
10. Don’t believe whatever he says. He’s a(n) **unreliable** man. (rely)

If you have more questions or need further assistance, feel free to ask!