题目内容：

Two weeks ago, we reported about developments with 1. (electricity) planes and flying cars. That technology could bring change to commercial and personal travel. Last week, two 2.(company), Kitty Hawk and Uber, announced their plans to bring flying cars to reality. Sooner 3.you think, flying cars may appear in the skies. Imagine never 4.(have) to worry about traffic, stoplights, or road construction. A flying car could get somewhere much faster than one traveling by road.

Kitty Hawk is a start-up tech company supported by Google co-founder. Its first flying cars, 5.travel at a speed of up to 40 kilometers an hour, 6.(expect) to go on sale by the end of 2017. Uber expects to launch flying taxis in Texas and Dubai by 2020. 7.says its flying taxis could travel up to 241 kilometers an hour, with the travel time 8.(reduce) from 2 hours on the road to 15 minutes in the air between San Francisco and San Jose, California. Riders could use the Uber app 9.(book) a flying taxi to take them to their destinations. It is estimated that flying taxi travel will be much 10. (expensive) compared with road taxi travel.