Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
— Is that our math teacher? — It be him. He has gone to London.
— How clean the classroom is! — Yes, I am sure someone it.
We will go to visit the Great Wall it rains tomorrow.
— Do you enjoy your present job? —. I just do it for a living.
— I feel really for the interview. — Take it easy. Sure you are the best.