问题补充：
Whose guitar is this? Susan plays the guitar. It must .
A. belong to her
B. belong her
C. belong to hers
D. belong hers
答案：
(答案→)A. belong to her
B. belong her
C. belong to hers
D. belong hers
解析：句意：这是谁的吉他？苏姗弹吉他，准是属于她的。belong to是固定搭配，其后接人称代词宾格。故选A。
