一道初三英语现在完成时选择题Susan is out .I wonder how long ago ________.A did she go B she has left C she leaves D she left正确答案是D,但为什么呢?谁来给我讲讲~

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一道初三英语现在完成时选择题Susan is out .I wonder how long ago ________.A did she go B she has left C she leaves D she left正确答案是D,但为什么呢?谁来给我讲讲~
一道初三英语现在完成时选择题
Susan is out .I wonder how long ago ________.
A did she go
B she has left
C she leaves
D she left
正确答案是D,但为什么呢?谁来给我讲讲~

一道初三英语现在完成时选择题Susan is out .I wonder how long ago ________.A did she go B she has left C she leaves D she left正确答案是D,但为什么呢?谁来给我讲讲~
D.
苏三出去了.我想知道她什么时候离开的.过去时.
如果想问她离开了多久.用完成时.
I wonder how long she has been away for.

how long ago 多长时间以前。明显的过去时间,只能用过去时。