Idon’tneedanyhelpatthemoment,butI_____youroffer
Instudiorecordings,newtechniquesmadepossibleeffectsthatnotevenanelectronicbandcouldproduce.
Beinga________(high)motivatedlauguagelearner,hetakeseveryopportunitytoimprovehisEnglish
Youmayusebike________yougiveitbacktometomorrowmorning
一热机的循环效率为15%，在一次循环中从外界吸热2000J，则此热机在一次循环中所做的净功为______J.
