Очень нужно ! Choose the correct answer from the words in italics.
As many people know, honey bees 1 (have died / have been dying) in huge numbers over the past few years and this 2 (has been worrying / has worried) scientists. However, engineers at a university in the USA 3 (have worked / have been working) for some time on designs for robotic flying bees and we may soon see these ‘Robobees’ in our skies. Robobees could help by doing the jobs that real bees should be doing.
Over the years scientists 4 (have seen / have been seeing) many failed attempts at making such bees. Researchers on the Robobee project 5 (have had / have been having) many similar problems in the past. They 6 (have created / have been creating) lots of different versions but now believe that, finally, they 7 (have succeeded / have been succeeding) in creating a model that really works. They 8 (have been trying / have tried) for a long time to produce something that is both small and light and it seems that at last they 9 (have managed / have been managing) it. So far a number of countries 10 (have announced / have been announcing) their plans to use Robobees, so their future looks hopeful!

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Ответы на вопрос:

ekaterinah05

4,7(18 оценок)

-hello, how are you?

-hello, i'm fine and you?

-i'm fine. thank you.

-what did you wear last saturday?

-i wore a t-shirt with black pants and sneakers.

-i was sick and didn't walk yesterday, therefore i want to know the sun did shine yesterday?

-yes, it did. what were you doing at five o'clock yesterday afternoon?

-i already told you that i was sick yesterday.

-ooooh, sorry. i forgot it.

-it doesn't matter. better say me what were you doing at six o'clock at morning?

-i slept. ok, thank you very much for this dialogue. it was nice to see you.

-thank you too. see you later

-see you

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