The project ______ by the end of 2007, will expand the city’s telephone network to cover 2,000,000 users.

If you go on thin ice ,you risk ______through.

Tom took a taxi to the airport, only ______ his plane high up in the sky.

（湖南省怀化市2014年高三第二次模拟考试）31. I still remember ______ to the hospital, supported by my class teacher when I was ill at school. 

(2014·乌鲁木齐地区高三第一次诊断)________means that you have a positive attitude toward your abilities and life.