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Oh! I ___ you ___ in Beijing.How long have you been here?
| A．don’t know.. were | B．hadn’t known.. were | C．haven’t known.. are | D．didn’t know.. were |
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Oh! I ___ you ___ in Beijing.How long have you been here?
| A．don’t know.. were | B．hadn’t known.. were | C．haven’t known.. are | D．didn’t know.. were |
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