Скобки нужно разкрыть в Present Simple, Continuous, Perfect и Perfect Continuous.Дам балл:
I ... (not to know) how long Henry ... (to work) on that project but he (not to finish) it yet
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Ответ дал:
3
Ответ:
I don't know [Present Simple] how long Henry has been working [Present Perfect Continuous] on this project, but he hasn't finished [Present Perfect] it yet.
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