急求几道高中英语题目,请大家帮帮忙啦~~~十分感谢
有解释最好啦~~~拜托了!
1.Allthetasks()aheadoftime,theydecidedtogoonholidayforaweek.
A.hadbeenfinishedB.werefinished
C.havingbeenfinishedD.beenfinished
2.Hisarticle()enoughsupportingideas.
A.islackingofB.lack
C.lacksofD.islackof
3.-Myunclewillbeheretoattendameetingtomorrow.
-Oh,Ithoughtthathe()today.
A.wascomingB.iscomingC.willcomeD.couldcome
4.Whenlast()valuable,thosebooksenjoyedgreatsuccess.
A.findingB.foundC.beingfoundD.tobefound