That is the day ______I'll never forget.
He left home early only______he was late as he went a wrong way.
He looked around and caught a man _______ his hand into the pocket of a passenger.
The shop doesn’t open until 11 am, _______ it loses a lot of business.
— Beijing or Shanghai? What did you mean? — We were talking about _______ go to college.
When he was a boy, he used to go there and watched _______.