Сделать ,. выберите нужную форму глагола, 1. by the beginning of the 21 st century a lot of models of planes (were invented/have been invented) 2 ln 1930 sliced bread (was introduced/has been introduced) in the usa 3 a photograph (was invented/has been invented) by thomas edison in 1877 4 many improvements (were made/have been made) in designing space rockets in russia by the beginning of the 21 st century 5 the first aeroplane in russia (was desighed/has been designed0 by mozhaiski in 1878.

megastas777 megastas777    3   19.09.2019 11:30    2

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asia1406 asia1406  08.10.2020 02:10
1 have been invited
2 was introduced
3 was invited
4 have been made
5 was designed
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