1.Ifoundadog____overbyacartheroad.A.torunB.runC.ranD.running为什么选B?选D不行吗?2._____carefully,thisletterisverybeautiful.A.TypeB.TypingC.TypedD.ToType为什么要选C?命令语气不应该用原型吗?3.Thevacation_
1.Ifoundadog____overbyacartheroad.
A.torunB.runC.ranD.running
为什么选B?选D不行吗?
2._____carefully,thisletterisverybeautiful.
A.TypeB.TypingC.TypedD.ToType
为什么要选C?命令语气不应该用原型吗?
3.Thevacation____over,thestudentscamebacktoschool.
A.isB.areC.wasD.being
这道题选D,选C不可以吗?
4.______,weleftoffourwork.
A.AftersettingthesunB.HavingsetthesunC.ThesunhavingsetD.Beingthesunset
为什么?选B不可以吗?