小王利用假期去桂林旅游，乘坐在漓江的游船上，看到秀丽的清山映在水中、鱼儿在清澈见底的水草中穿梭，他看到水中的青山是由于光的______形成的______像，看到较浅的河床是光的______形成的______像．（填“虚”或“实”）．

The government has agreed to pay the firms extra sums to       for their financial losses. [ ]

A. make up

B. bring up

C. fill up

D. look up