问题描述：
I（）to my brother since last summmerAdidn't B hadn't writter C haven't written Ddon't write
LIPing will visit the Great Wall as soon as he(）freeAwill be Bis C was D has been
One day when I(）the post office I（）my unlce A pass,say B was passing,saw Cpassed,was seeing D am passing,an seeing
He(）he()some mistekes in the test Asaid,will makeBsaid made Csaid,had madeDsaid,make
LIPing will visit the Great Wall as soon as he(）freeAwill be Bis C was D has been
One day when I(）the post office I（）my unlce A pass,say B was passing,saw Cpassed,was seeing D am passing,an seeing
He(）he()some mistekes in the test Asaid,will makeBsaid made Csaid,had madeDsaid,make
问题解答：
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