Signal words Present continuous

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 signal words

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

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