Tìm lỗi sai trong các câu sau và giải thích, sửa lại chúng:
1. Hoa asked me if I could have a picnic with her in the country or not.
2. Most of monkeys both in the forest and in the zoo are interesting in bananas.
3. Not only Ha but also her friends was present in my fifteenth birthday party.
4. Nothing has done since I moved here.
5. My brother attends an university in the Midwest which specializes in astrology.
