急如意令:英语知识运用的问题
Therearethirteenormoreofthem,andif____ismissingadeficiencydiseasebecomesapparent.
A.anyB.someC.anythingD.something
Whentheworkiswelldone,aclimateofaccident-freeoperationsisestablished_____timelostduetoinjuriesiskeptataminimum.
A.whereB.howC.whatD.unless
解释一下意思,并说明为什么要选这个而不是其他项
邮箱:联系方式: