The stone hits ________ .
The stone hits ________ .
A.the boy on his back
B.the boy in his back
C.on the boy's back
D.the boy on the back
答案及解析： D
The stone hits ________ .
A.the boy on his back
B.the boy in his back
C.on the boy's back
D.the boy on the back
答案及解析： D