Question

Помогите сделать английский,пожалуйста.

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.

Answer 1

1 have been invited
2 was introduced
3 was invited
4 have been made
5 was designed