Present continuous signal words

Simple present signal words: at the moment, at present, now, right now, still, today, tonight.
Look! Listen!

Examples:

She is now sitting in the classroom.
They are right now reading a book.
Look! They are watching television.

English Present continuous exercises

Present continuous  with free online exercises, Present continuous examples and sentences. Online exercises Present continuous,  questions and Present continuous negative sentences.

Online exercises English grammar and courses
Free tutorial Present continuous. English Present continuous exercises. English grammar easy to learn. Present continuous matching exercises, quizzes and riddles - English word order.