【题目】He was unhappy when he sold his violin．After all，he________it for a very long time．
A.has had
B.had had
C.has
D.had

【答案】B
【解析】考查时态。for后接一段时间用完成时，又因为前句谓语是过去时，所以用过去完成时，时态要保持一致。故选B.