来自曲大伟的问题
LikemostEnglishchildrenIlearnedFrenchatschoolLikemostEnglishchildrenIlearnedFrench-----school这个当中的at为什么不能用during
LikemostEnglishchildrenIlearnedFrenchatschool
LikemostEnglishchildrenIlearnedFrench-----school
这个当中的at为什么不能用during

