Lucy’s new job paid twice as much as she had made ____ in the restaurant. 

The boy was seen ___ his bikecycle while riding in the street.

Around 15,000 officials gathered in Copenhagen, trying to map out an effective strategy _____ the battle against climate change．

We finished the run in less than half the time _________．

University of Cambridge, ______ in 1209, is home to a great number of outstanding figures．