16 задание,хэлп!!!!!!

Question

16 задание,хэлп!!!!!!

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Answer 1

1) have discovered
2) have been tested.
3) have had
4) have not started
5) have showed
6) have always been

Comments

a Present Perfect Continuous где?

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2) have been testing, извините - опечаталась )

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5) has showed

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только во втором continuous?

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да