南昌宏宇学校
  首页 / 试题 / 高中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:2131

David was always ______ his best in any danger, but at that moment he froze.

A.at B.in C.for D.on
登录并查看解析

David was always ______ his be