People are _________the use of alternative energy sources. Because the fossil fuels _________will be used sooner or later.

The U.S. government on Wednesday ________ former Commerce Secretary Gary Locke as ambassador to China, making him the first Chinese-American ever to take the post.

otel is the highest building in the city, from _______ top you can enjoy a good view of our city.

As we all know, houses can be sold at a high price which are _____ for schools, supermarkets, bus stations and hospitals.

CouldI speak to is incharge of International Sales please