问题标题：
I（）tomybrothersincelastsummmerAdidn'tBhadn'twritterChaven'twrittenDdon'twriteLIPingwillvisittheGreatWallassoonashe(）freeAwillbeBisCwasDhasbeenOnedaywhenI(）thepostofficeI（）myunlceApass,sayBwaspassin
问题描述：
I（）tomybrothersincelastsummmerAdidn'tBhadn'twritterChaven'twrittenDdon'twrite
LIPingwillvisittheGreatWallassoonashe(）freeAwillbeBisCwasDhasbeen
OnedaywhenI(）thepostofficeI（）myunlceApass,sayBwaspassing,sawCpassed,wasseeingDampassing,anseeing
He(）he()somemistekesinthetestAsaid,willmakeBsaidmadeCsaid,hadmadeDsaid,make
吕伟新回答：
C从过去开始,直到现在,将来也可能继续.因此用现在完成时.
Bis用一般是表将来.
B过去进行的事,短暂的用一般过去,
C两个过去式,先后问题
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