My sister is only four years old but she can look after now.A. sheB. herC. hersD. hersel

问题补充：

My sister is only four years old, but she can look after now.

A. she

B. her

C. hers

D. herself

答案：

A. she

B. her

C. hers

(答案→)D. herself

解析：句意：虽然我的妹妹只有四岁，但是她现在能照顾好自己。结合句意，强调妹妹能照顾自己，因此用反身代词herself。故选D。