Question

who is boy over there?he is tom .he is careful答案

-Who is the boy over there？
-______ is my brother．（　　）

A. He

B. His

C. Him

D. Himself

Answer 1

答案：A．
根据问题可知是询问的the boy的情况，结合后面的句子成分可知充当主语的需要用代词的主格，所以选A．his为形容词性物主代词，多作定语；him为代词的宾格，作动词的或介词的宾语；himself为反身代词，可以充当主语、宾语或者同位语等．