几道英语问题
1.They___eachotherandbeeninlovesincetheywerelittle.
A.hadknownB.knewC.knowD.haveknown
为什么选D
2.Bytheendoflastmonth,he___halfofhiswork.
A.finishedB.hasfinishedC.hadfinishedD.finishes
为什么选C
3.Ican'tdescribetoyou____atthatmoment.
A.howIfeelB.howdidIfeel
C,howIfeltD.howdoIfeel
为什么选C