题目内容：

高二英语问题(非谓语、虚拟语气、it用法,希望能够具体分析）
1____to give up smoking,he threw away his ____ cigarettes.
A Determined,remained B Determined,remaining
C Determining,remained D Determining,remaining
2 Is that the laundry?I have some clothes _____
A to wash B to be washed
C washed D washing
3 Their homework_____,Peter and Ben went to play football.
A having done(为何不可?换成 having been done可否?)
B doing
C did D done
4 There are three kinds of dictionaries here,but I'm at a loss which______
A to be chosen from B to choose
C for choosing D to choose form
5 It was not___ the many blows she received as the lack of fighting spirit ___ led to he losing the game.
A so,which B so much,that C like,that D as,which
6请问,表对过去的虚拟语气能有 must have done或者may have done的形式么?不都是什么would/should/might have done?没有must和may的呀?