Сравните, как выглядел и жил человек в времена, с тем, что сейчас5 предложений) например: prehistoric people were the most hairy becose of the weather comditions.

Нетушки нет  нет фиг да да да

1.      somebody built this castle in the 16th century.

this castle was built by somebody in the 16th century.

2.      they will not finish this work tomorrow.

this work will not be finished tomorrow.

3.      the teacher has checked our tests.

our tests have been checked by the teacher.

4.      we make the compressors for those machines here.

the compressors for those machines are made here.

5.      he has not fixed the date for the next appointment

the date for the next appointment has not been fixed by him.

1. we (were doing sightseeing) when it ( stopped) raining. 2. if the british company ( gives) a 5% discount we (will agree) to buy 100 machines from them. 3.the sellers (will start) delivering the goods a month after they (have signed) a contract. 4. we (will complete) the deliveries sooner if the buyers (provide) transport facilities. 5. mr stanley (will not discuss) the delivery time until he ( contacts) the managing director. 6. the company (will offer) the goods for immediate delivery if the buyers ( agree) to cif terms. 7. let’s clarify the payment terms when we ( meet) next time. 8. i think we (will leave) the matter open until we ( meet) next week.