Professor John will give us a lecture on how to learn English, but when and where ____ yet.
| A．hasn’t been decided |
| B．haven’t been decided |
| C．isn’t decided |
| D．aren’t decided |
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Professor John will give us a lecture on how to learn English, but when and where ____ yet.
| A．hasn’t been decided |
| B．haven’t been decided |
| C．isn’t decided |
| D．aren’t decided |
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