Помогите с английским 9 класс, 358 упражнение

Question

Помогите с английским 9 класс, 358 упражнение

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Answer 1

1.Is learning/had been lerning
2.Are discussing/ have been discussing
3.Is working/is working/has been working
4. Is/has been
5.Teachs/has been teaching
6.Know/have known/have known