10.Mr.Black has a ___.A.ten year old boy B.ten -years old boy C.boy of ten year old D.boy of ten
问题描述：
10.Mr.Black has a ___.A.ten year old boy B.ten -years old boy C.boy of ten year old D.boy of ten
答
D.boy of ten
答
选D
A应该是ten years old boy
B应该是ten -year old boy
C应该是boy of ten years old
进步 ：）