My dictionary ___,I have looked for it everywhere but still___ it.　　A.has lost,don't find　B.
B.is missing,don't find　C.has lost,haven't found　D.is missing,haven't found.　主要是讨论,为什么不用has lost ,它也是表示丢失了,用现在完成时表示了一直到现在都丢失的状态啊