"manyofthemcannotcatchupwiththeothers."meansmanyofthem________behindtheother________.
2022-01-21 35次 反馈错误 加入收藏 正确率 : 100%
题目内容：
"many of them can not catch up with the others."means many of them ________behind the other________.
优质解答
fall,students
fall behind 落后于.
catch up with .追上；赶上
本题链接：
