试题详情
单项选择 适中0.65 引用2 组卷168
—Is he coming here tomorrow?
—I'm not sure ________ he will come or not.
A.whenB.howC.whetherD.why
19-20九年级上·全国·课时练习
知识点:if/whether引导宾语从句从属连词辨析 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!