---I was trying to carry out the plan, but I failed.

---Well, you _____, for we were uncertain it would do ____.

A．needn’t do that, in fact

B．needn’t have done, in effect

C．needn’t have, in practice

D．needn’t, in time

でんしゃの　なかで　すり（　　　）　しふを　ぬすまれました。 　

A．に

B．が

C．の

D．は