MCQ Practice English 📖 Choose the correct verb form. ক The thickness of the book variesখ The thickness of the book varyগ The thickness of the book varyingঘ The thickness of the books vary Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousChoose the correct sentence - NextChoose the right form of verb: Three- fourth of the road ( to be ) pitched.