问题补充:
Where you the key? I it yet.
A. did; put;didn’t find
B. did; put; haven’t found
C. have; put; didn’t find
D. have; put; have found
答案:
A. did; put;didn’t find
(答案→)B. did; put; haven’t found
C. have; put; didn’t find
D. have; put; have found
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