This article was written ______ for China Daily.

To “stick to something” means that you continue to do it and don’t ______.

Gary Locke , a Chinese-American, once______ as the governor of Washington for 8 years and now is U.SCommerce Secretary

The roads are crowded __________ walking towork is even quicker than driving.

So far we have done a lot to build a lowcarbon economy, but it is________ idealWe have to work still harder[ ]