句型变化 

1.The question is so hard that we can't understand it.        

1) too...  to句式_____     

2) enough句式_               

2.He didn't come here yesterday because of the heavy rain. (变为复合句)          

He didn't come here yesterday _____.      

3.Get up early, or you'll be late for the train, (变为条件状语从句)          

_____, you won't be late for the  train.        

4.If you speak more,  you'll speak better. (同义句)       

____you speak,____you'll speak.        

5.Wherever you go, I'll miss you for ever. （同义句)         

    __you go, I'll miss you  for ever.

父亲把所有财物平均分成若干份后全部分给儿子们，其规则是长子拿一份财物和剩下的十分之一，次子拿两份财物和剩下的十分之一，三儿子拿三份财物和剩下的十分之一，以此类推，结果所有儿子拿到的财物都一样多，请问父亲一共有几个儿子( )

A．6

B．8

C．9

D．10