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 .

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)

1.there is a green field next to the farmhouse. - is there a green field next to the farmhouse? where is there a green field?

2.the farmer will work hard in the field in spring. - will the farmer work hard in the field in spring? when will the farmer work hard in the field?

3. the children will live on their uncle's farm next month. - will the children live on their uncle's farm next month? where will the children live next month ?

4.the friends come to the farm every day because they feed the animals. - do the friends come to the farm every day because they feed the animals? why do the friends come to the farm every day?