the clothes must have been washed by her just now,___A.didn't they B.hadn't they C.haven't they

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the clothes must have been washed by her just now,___A.didn't they B.hadn't they C.haven't they
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the clothes must have been washed by her just now,___A.didn't they B.hadn't they C.haven't they
the clothes must have been washed by her just now,___A.didn't they B.hadn't they C.haven't they

the clothes must have been washed by her just now,___A.didn't they B.hadn't they C.haven't they
句中有时间的标志性短语just now,时态就只能用一般过去时,不可以用完成时.【反义疑问句肯定要根据时态,所以是didn't they 】
选:A