1, 2, 3 задание, в первом просто формы

Ответ:

are, are, are, will be, is, are

the letter will be posted by him tomorrow

A new house will be built by them next year

Our mother's birthday was celebrated by us last week

Telephone was invented by A.G.Bell

More and More cars are produced by people every year

The doctor was asked by him to visit his father

The water is polluted by factories

British people often drink coffee

Italians speak italian in Italy

People founded Cambridge University in 1348

When did Columbus discover America?

Miss. White will translate the poem

Объяснение: