These English grammar exercises are part of a series of free quizzes. There will be 15 random quizzes of English grammar for a test, and you will have 10 minutes to complete them all. Each quiz has several options and you will be able to choose only one. There are two modes of this application: Learn and Test - Each question to be answered correctly, you will have 1 plus point. - Each question to have wrong answer, you will not earn any plus point. (Note: plus point is added into leaderboard in testing mode only) - Rank Order is used to show you every user's points as well as ranking orders. You have to sign in Game Center to see leaderboard as well as your ranking and others.