The witnesses ______ by the police just now gave very different descriptions of the fight.

______ a truck coming directly from the opposite direction, the car driver turned ______ right to avoid a head-on collision. 

The book represents a wonderful love story, so once______, it will be popular with young people.

—How was your trip?—Fine but ______．Milan was interesting．It’ s bigger than I expected, however a little ______ and dirtier．

Professor White has received a letter ___ to give a lecture in Peking University.