高中状语从句小题(附答案,
_____importantwemayregardschoollifetobe,parentshaveagreatinfluenceontheirchildrenbecausetheyspendmoretimeathomethanintheclassroom.
我选的Although,答案是However,我觉得意思上不对啊
____IfailedinEnglishathirdtime,Ihadnodoubtaboutmygiftforforeignlanguage.
答案是Until,我选Unless为什么不对呢?
Johnknockedatthedoorfornearlyfiveminutes____hiswifeopenedit.
答案是before,until为什么不可以?