—Who bought you the fresh flower?—It’s from my girlfriend if you know.A. have toB. mustC

问题补充：

—Who bought you the fresh flower?

—It’s from my girlfriend, if you know.

A. have to

B. must

C. will

D. might

答案：

A. have to

(答案→)B. must

C. will

D. might

解析：此题考查情态动词用法。语境“——谁给你买得鲜花？——如果你一定要知道的话，是女朋友给买的。”此处must意为：一定，非得。此题在生活实际会话中考查情态动词，语言真实，符合在语境中考查语法的高考要求。