问题补充：
---- Mum, I don’t like drinking milk.
---- For your health, dear, you .
A. must
B. have to
C. need
D. could
答案：
A. must
(答案→)B. have to
C. need
D. could
解析：句意：我不喜欢喝牛奶，为了你的健康，亲爱的，你必须。A. must 情态动词 表主观意识B. have to不得不，表示客观意识 C. need 需要 D. could能，会。根据句意故选B.
