A-A+ I doubt_____they can swim across the river.A.whyB.thatC.whetherD.when 2023-09-04 16:59:23 外语考试 阅读 问题详情 I doubt_____they can swim across the river.A.whyB.thatC.whetherD.when请帮忙给出正确答案和分析,谢谢! 参考答案 查看解答