Has ever mankind experienced changes in life and work on such a scale? Mankind has never experienced changes in life and work on such a scale, has it? What has mankind ever experienced? Has mankind ever experienced changes or stability in life and work?
Is the task of world community to improve the ecological situation in the world? The task of world community to improve the ecological situation in the world, isn' t it? What is the task of world community? Is the task of world community to improve the ecological or economic situation in the world? Shall we become engineers in six years? In six years we shall become engineers, shan't we? What shall we become in six years? Shall we become engenders or teachers in six years?
4. Holland is famous for its cheeses. is - глагол to be, показатель 3-го лица единственного числа в Present Indefinite its - показатель притяжательного падежа имени существительного cheeses - признак множественного числа имени существительного
5. You can tell by a Dutch woman`s clothes where she lives. woman`s - показатель притяжательного падежа имени существитель-ного clothes - признак множественного числа имени существительного lives - показатель 3-го лица единственного числа глагола в Present Indefinite
6. Kate cooks dinner every day. cooks - показатель 3-го лица единственного числа глагола в Present Indefinite
извините но я не поняла что там написано :(