The price but I doubt whether it will remain so.
A．went down B．will go down
C．has gone down D．was going down
The price but I doubt whether it will remain so.
A．went down B．will go down
C．has gone down D．was going down
C
【解析】
句意：价格下跌了，但我怀疑它是否还会继续下跌。考查动词时态辨析题。根据I doubt whether it will remain so.，可知go down（价格下降）发生在过去并对现在有持续的影响，需用现在完成时态，故选C。