_____ your timely advice,I would never have known how to go about the work.
A、UnlessB
暂无解析
Thebackgardenofourhousecontainsalawn，（）verypleasanttositoninsummer.
_____nocauseforalarm,theoldmanwentbacktohisroom.
John'sscoreonthetestisthehighestintheclass;he____lastnight.
You____thatlettertoJames.However，youdidn't.
Itisimperativethatstudents_____theirtermpapersontime.
