______ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
In an experiment, pet owners are being encouraged to take their pets to work, a move _______ can be good for both the people and the pets.
They will fly to Washington,they plan to stay for two or three days.
10. We went through a period _____ communications were very difficult in the rural areas.
13.For many cities in the world, there is no room to spread out further, _______ New York is an example. 14.
11.Villagers here depend on the fishing industry, ______ there won't be much work. 12.