"Are there any planets similar to Earth in the Solar System?" -> John asked his teacher.......
John asked his teacher if there were any planets similar to Earth in the Solar System.
"When did Neil Amstrong land on the Moon?" -> History teacher asked her students....
History teacher asked her students when Neil Amstrong had landed on the Moon.
"Will people be able to live in space in the next 20 years?" -> The baby girl asked her father ....
The baby girl asked her father if people would be able to live in space in the next 20 years.