A.must ![]() | B.can ![]() | C.may | D.need |
A.visited ![]() | B.will visit ![]() | C.visit ![]() | D.have visited |
A.stay, go out |
B.come, stay |
C.to stay, to go |
D.to stay, go out |
A.taller | B.tall | C.tallest |
A.short | B.shorter | C.hall |