问题
选择题
Tom could swim very well at the age of seven. [ ]
A. at he age of seven
B. at his age of seven
C. when she was seven
D. when he was seven
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Tom could swim very well at the age of seven. [ ]
A. at he age of seven
B. at his age of seven
C. when she was seven
D. when he was seven
答案：D