问题标题:
.Robertissaid____abroad,butIdon’tknowwhatcountryhestudiedin.A.tohavestudiedB.tostudyC.tobestudyingD.tohavebeen请详细解释其他答案为什么不对
问题描述:
.Robertissaid____abroad,butIdon’tknowwhatcountryhestudiedin.
A.tohavestudied B.tostudy C.tobestudying D.tohavebeen请详细解释其他答案为什么不对
高海波回答:
当然
因为后面用了hestudiedin,表过去故B/C不行,D则语意不对,同意因为后面有hestudiedin,故用A更合题意、前后一致.
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