It was ____ I met Mr Green in Shanghai.
______ to the climate here, the old couple would rather live here for the rest of their life _____move to another city.
I ____ Mr. White at that time, otherwise I wouldn’t have asked you for some information about him.
It was three o’clock _______ he came back from work.
It shames to me to say it, but I told a lie when _______ at the meeting by my boss.
I didn’t know it could do terrible ______to your heart and lungs or ______was more difficult for smoking couples to become pregnant.