— He’s already been back to Australia,________ ?
— _______ .He’s on a visit to Shanghai .
| A．isn’t he , No | B．hasn’t he, Yes |
| C．isn’t he , Yes | D．hasn’t he , No |
— He’s already been back to Australia,________ ?
— _______ .He’s on a visit to Shanghai .
| A．isn’t he , No | B．hasn’t he, Yes |
| C．isn’t he , Yes | D．hasn’t he , No |
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