He asked why did I do that
He asked why I did that/why I had done that
I have already finish it yet.
I have already finished it
My mum is police officer, my dad works like a teacher
My mum is a police officer, my dad works as a teacher
They selled the car last week
They sold the car last week
I couldn't see nobody
I couldn't see anybody
It is better playing tennis in summer
Playing tennis in summer is better / It is better to play tennis in summer
I want to know who are you
I want to know who you are
I knew him for 3 years
I have known him for 3 years
Anybody could see me
Nobody could see me
If it rain, I won't go to the market.
If it rains, I won't go to the market
He is not here, he has been to the bank
He is not here, he has gone to the bank