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

18. This road is ....... than that road.

A. narrower               B. narrow                   C. the most narrow                 D. more narrower

19. He drives ……. his brother.

A. more careful than                                    B. more carefully

C. more carefully than                                 D. as careful as

20. It was ....... day of the year.

A. the colder                         B. the coldest               C. coldest                   D. colder