Sure, here is the corrected version of the paragraph with the errors identified and corrected:

Hoa wanted to enroll in the activities for this summer. She came to meet the secretary of the school Y & Y. The secretary **gave** her an application form and asked her to fill it in with some of her personal information such as her name, telephone number, address, and her hobbies. Then she had to take this form **to** her form teacher and **ask** her to sign it. After that, she had to bring it back to the secretary. Hoa thinks that it **is** interesting to participate **in** many various activities.

1. **gives** -> **gave**
2. **with** -> **to**
3. **asked** -> **ask**
4. **was** -> **is**
5. **on** -> **in**