Question

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 .

Answer 1

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

Answer 2

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)