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13. He did the test ……….. I did.

A. as bad as B. badder than C. more badly than D. worse than

14. A boat is ....... than a plane.

A. slower B. slowest C. more slow D. more slower

15. My new sofa is ....... than the old one.

A. more comfortable B. comfortably C. more comfortabler D. comfortable

16. My sister dances ……….. than me.

A. gooder B. weller C. better D. more good

17. My bedroom is ....... room in my house.

A. tidier than B. the tidiest C. the most tidy D. more tidier