——How often do I need to feed the dog? —
题型:选择题
问题:
——How often do I need to feed the dog?
——It___food everyday, or it will be hungry.
A.must give
B.must be give
C.must be given
D.must be gave
——How often do I need to feed the dog?
——It___food everyday, or it will be hungry.
A.must give
B.must be give
C.must be given
D.must be gave