参考答案

正确答案：B
解析："nosooner...than"，"hardly…when"和"scarcely…before"相当于"assoonas"之意。当hardly，scarcely和nosooner置于句子之首时，语气较强，主句的谓语要部分倒装。例如：①Wehadhardlybegunwhenweweretoldtostop.②Hardlyhadwebegunwhenweweretoldtostop．③Thespyhadnosoonerreturnedhomethanhewastoldtogotoanothercountry．因此Hardly与选项[B]刚好相配，为正确选项。