Choose the best answer

Our teacher asked if we understood the lesson about planets in solar system that day.

"Which planet do you like best, Tim?", Nam asked.

=> Nam asked Tim 

"How do you know about the solar system?", he asked.

=> He asked me

“Do the aliens eat the same types of foods and drinks like humans?”, the little boy (whether)

→ The little boy asked his teacher

My friend asked me “Is it possible for any normal people to fly into the space?” (if)

→ My friend asked me

“What might the inhabitants of Mars look like?”, Tommy wondered.

→ Tom wondered

"Have you ever met an alien, Mary?", he asked. (whether)

He asked Mary 

“Are you interested in astronomy?”, Dave asked me. (if)

→