问题

Her son ___________ cocoa, but now he___________ milk
A:used to drinking;drinks
B:used to drink; is used to drinking
C:is used to drinking;used to drink
D:is used to drink ; is drinking;
B:used to drink; is used to drinking
C:is used to drinking;used to drink
D:is used to drink ; is drinking;
正确答案是: