The boy complained ____ me about his teacher.
- For
- From
- With
- To
- Against
Explanation
We word complain is followed by to/about.
To & about are prepositions here.
Complain to someone کسی انسان سے شکایت کرنا
Complain about something کسی معاملے پر شکایت کرنا
The boy complained to me about his teacher.