_____ the government’s call to develop the west, many college graduates volunteer to work in western part of China.

. How cold it is! We’ve never had ______this winter.

I just cbut wait..

Kate, it’s midnight! Why stay up so late—I’d like to go to bed earlier, but the test paper be handed in tomorrow morning.

Let’s go to the movie tonight, Jim!—_____ we are not allowed to do it on school days.