Put the verbs given in the Past indefinite or present perfect tenses : 1 yesterday they (to carry out ) their first experiment in the laboratory. 2 he not yet (to graduate ) from the institute . 3we ( to carry out ) many experi...

Put the verbs given in the Past indefinite or present perfect tenses : 1 yesterday they (to carry out ) their first experiment in the laboratory. 2 he not yet (to graduate ) from the institute . 3we ( to carry out ) many experiments lately . 4 Moscow (to become) one of the most beautiful cities in the world .
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Гость
1. They carried out 2. He has not yet graduated 3. We have carried out 4. Has become
Гость
1 yesterday they carried out their first experiment in the laboratory. 2 he hasn't yet graduated from the institute . 3 we have carried out many experiments lately. 4 Moscow has become one of the most beautiful cities in the world. (можно и became - зависит от предложений по тексту)
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