Identify the correct clause structure: A. Although tired, but he kept working B. Despite of the rain, we continued C. Whereas she agrees, her colleague disagrees D. Unless you don't hurry, you'll miss it 答案解析 核心考点：连词使用规范 解题思路：连词不能重复使用 正确选项C正确使用'whereas'对比 A错误重复'although...but' B错误使用'despite of' D双重否定错误 易错点：中英文连词用法差异 正确答案：C