Задание:
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 henot 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 .
Решение:
1. They carried out 2. He has not yet graduated 3. We have carried out 4. Has become
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