Mr Black asked where he had gone.
The woman asked what they were looking for.
Mr Liu asked if it was raining hard outside.
Millie asked me if I had seen the film before.
I asked Lictty if she would help him with his homework.
Detective Lu asked if he had a criminal record.
My father said the earth moves around the sun.
Millie told us there are seven days in a week.
Simon said light travels much faster than sound.
最后三句是客观真理,时态用一般现