问题
选择题
When you do eye exercises, you must keep your eyes_______. [ ]
A. close
B. closed
C. open
D. closing
答案
答案：B
搜题请搜索小程序“爱下问搜题”
When you do eye exercises, you must keep your eyes_______. [ ]
A. close
B. closed
C. open
D. closing
答案：B