"The grey drizzle of horror," author William Styron memorably called depression. The mood disorder may descend seemingly out of the blue, or it may come on the heels of a defeat or personal loss, ...

Introduction Charlotte has got a class on the present simple and the present continuous. Download the free worksheet, join the class and improve your English! Language focus present simple present ...

Abstract: The electrified railways are the largest single consumer of the power grid, in which the neutral sections between traction networks are always a major ...