“He acted on my advice” The complex form of this sentence is-

1. I advised him and he acted.
2. I advised him that he acted.
3. He acted according to my advis.
4. He acted as I advised him.

Explanation: Simple sentence থেকে complex sentence এ করতে পরিবর্তন as/since/when/after/before ইত্যাদি যুক্ত হয়।