____youwerebusy,Iwouldn’thavebotheredyouwithquestions.
A、IfIrealizedB
暂无解析
_____yourtimelyadvice,Iwouldneverhaveknownhowtogoaboutthework.
Itisnotuncommonforthere_____problemsofcommunicationbetweentheoldandtheyoung.
Underthis（）pressuresomeoftherocksevenbecameliquid.
IfonlyI_____playtheguitaraswellasyou!
_____ifIhadarrivedyesterdaywithoutlettingyouknowbeforehand.
