(届北京市海淀区高三下学期期中练习)Mr. Smith couldn’t open the door because his naughty boy ______ it from the inside.
The museum he paid a visit _____ at the end of the street.
The day will come _____ the people all over the world will get rid of poverty.
He is over sixty, but doesn’t look _____.
Why is it _____ he can’t get along well with his classmates?
Mary wrote an article on _____ the team had failed to win the game.