3岁小儿，右肘部被牵拉后即出现哭闹，肘略屈，不敢拿东西。其诊断最大可能是（）

A.右肘关节脱位

B.右肘关节软组织损伤

C.右桡骨小头半脱位

D.右肱骨髁上骨折

E.孟氏骨折

—I saw Lucy go to Miss Zhang's home just now.        

—Yes, she is often seen            Miss Zhang with her housework.           [ ]

A. help

B. to help

C. helping