[单选题]Among the following features, which one is not possessed by "while"?COU答案窝(daanwo.com)-大学生作业答案及考资分享平台 Aa conjunctionCOU答案窝(daanwo.com)-大学生作业答案及考资分享平台 Ban adversativeCOU答案窝(daanwo.com)-大学生作业答案及考资分享平台 Cmeaning "though"COU答案窝(daanwo.com)-大学生作业答案及考资分享平台 Dmeaning "during"