___ a clear answer from his teacher,
___ a clear answer from his teacher,
he decided to turn to an expert.
A.Not having got B.Having not got
C.NOt getting D.Getting not
C为什么不对,请解析,
he decided to turn to an expert.
A.Not having got B.Having not got
C.NOt getting D.Getting not
C为什么不对,请解析,
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