Here are the corrected sentences:

1. Dr. Wils (This seems to be a fragment without context. If you provide more information, I can assist you better.)

C. INUD 100 (Similarly, this appears to be incomplete without context.)

1. This is the best song. I like singing it very much. (Corrected: This is the best song. I enjoy singing it very much.)

VI. Change the sentences into reported speech and passive voice:

1. Minh asked if I knew about UFOs.
2. She asked if I could swim.
3. Hoa asked which planets I liked.
4. It is recommended that our environment be protected.
5. A lot of damage is caused by natural disasters.

VII. Rewrite each sentence with the same meaning:

1. Why don't you have your hair cut?

   • She suggests that I should have my hair cut.

2. She doesn't buy the dictionary because she doesn't have enough money.

   • If she had enough money, she would buy the dictionary.