Did you know any German before you got to Berlin?Not a single word( )A.have l learned B.had l learned C.l've learned D.l had learned为什么选B不选A?

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Did you know any German before you got to Berlin?Not a single word( )A.have l learned B.had l learned C.l've learned D.l had learned为什么选B不选A?
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Did you know any German before you got to Berlin?Not a single word( )A.have l learned B.had l learned C.l've learned D.l had learned为什么选B不选A?
Did you know any German before you got to Berlin?Not a single word( )
A.have l learned B.had l learned C.l've learned D.l had learned为什么选B不选A?

Did you know any German before you got to Berlin?Not a single word( )A.have l learned B.had l learned C.l've learned D.l had learned为什么选B不选A?
看前一句话,如果问的是do you know,那答案就是A了