This is the school _____ they visited last year and is the one _____ my father once worked

The question that puzzled them is ____ they can getrid of the air pollution in the area.

Did Jenny play the role _______ the princess in the play— Yes, she did. The prince saved her and fell in love _______ her.

The government decided to tear down the old bridge, which was not strong enough to allow the ___ of heavy vehicles (车辆).

_____ do you _____ the book —It’s very interesting.