The policeman caught the thief by arm.A. anB. hisC. theD. a

问题补充：

The policeman caught the thief by arm.

A. an

B. his

C. the

D. a

答案：

A. an

B. his

(答案→)C. the

D. a

解析：表示“打他的脸”、“拉她的手”等一般用下面的句型：动词+被打的人或物+介词+被打的部位。