Помогите пожалуйста с домашним заданием по английскому языку срочно

Определите по грамматическим признакам, какой частью речи являются слова, оформленные окончанием -s, и какую функцию это окончание выполняет, т.е служит оно
а) показателем 3 лица ед числа в present indefinite
б) признаком мн числа имени существительного
в) показателем притяжательного падежа имени существительного
All my son's friends are students .
My mother lives in the country .
Every year she visits her relatives .

Подчеркните в каждом предложение глагол сказуемое и определите видо временную форму и залог
They were working all the evening yesterday.
They have visited many places of interest during their traveling.
This dinner is cooked by my sister.
My father was operated yesterday.

Подчеркните participle 1 и participle 2 и установите функцию каждого из них, т е является ли оно определением, обстоятельством или частью сказуемого
When done this work will give good results.
The girl playing chess with her friends is a student of our group.
The experiments made at our laboratory are very interesting.
Walking in the forest i enjoyed fresh air.

Подчеркните в каждом предложение модальный глагол или его эквивалент
They can do this work themselves.
They were allowed to use dictionaries at the lesson.
He had to take a taxi because it was too late.

Переведите предложение обращая внимание на бессоюзное подчинение
We were sure we should succeed in introducing the new flavours to the market .
The young engineer is sure the professor will give him some valuable advice.

Переведите предложение обращая внимание на функцию инфинитива в предложениях
Milk is often pasteurised to destroy pathogenic microorganisms and to eliminate spoilage and defects induced by bacteria.
The main problem of the Sunday style yogurt priduction is to place and keep fruit at the bottom of the cup.
To obtain condersed milk water should be partially removed from the mixture of milk and suitable sweetener.
The total solid content to be reached in buttermilk is 12-13,5 percent.