It _______ seven years __________ Hong Kong returned to China.
— Kitty, do you know ______? — Sure, about forty minutes.
I walk ______ the square after supper every day, so I know very well every small shop there.
Do you know the man_______ saved five people in the fire?
The old man was so_______ the good news that he couldn’t say a word.
—Don’t smoke here, please. — ______.