Mr Smith---out for a walj in the park every day A has gone away B had gone away Chas left Dhas be

Mr Smith---out for a walj in the park every day A has gone away B had gone away Chas left Dhas be

选A（单数第三人称用has,时态是一般现在时）
B是过去完成式、与题目everyday一般现在时语境不符
C中left out没有这种搭配
D本身就是错的

　　A has gone away

A
D has be 本身就不对，应该是has been.
C has left 跟后面的out 不能连在一块用。如果要用leave 的话，应该是has left for a walk。
B had gone away 是过去分词，而句子中用的是every day，显然应该用现在分词。