i saw kelvin in the lift this morning.really?he( )arround here for a long timeA hasn't been seen D hadn't been seen

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i saw kelvin in the lift this morning.really?he( )arround here for a long timeA hasn't been seen D hadn't been seen

i saw kelvin in the lift this morning.really?he( )arround here for a long timeA hasn't been seen D hadn't been seen
i saw kelvin in the lift this morning.really?he( )arround here for a long time
A hasn't been seen D hadn't been seen

i saw kelvin in the lift this morning.really?he( )arround here for a long timeA hasn't been seen D hadn't been seen
D.在今天上午之前他已经有很长时间没在这里了.用过去完成