来自费本初的问题
【Iknockedseveraltimes__________anoldmanansweredthedoor.A.asB.whenC.whileD.before】
Iknockedseveraltimes__________anoldmanansweredthedoor.
A.as
B.when
C.while
D.before


【Iknockedseveraltimes__________anoldmanansweredthedoor.A.asB.whenC.whileD.before】
Iknockedseveraltimes__________anoldmanansweredthedoor.
A.as
B.when
C.while
D.before
选D.其实用上before的很多句子翻译时最好不要直译,如这句的翻译:我连敲了几下,才有一个老人应门.