An Allergy is a hypersensitivity of the body to any substance. This substance can be any chemical ingredient, product, hair, dust, pollen or a germ. Today it is well established that allergens may be substances produced within the body. They are called antiallergenic or autoallergens. They are natural – unmodified tissue proteins that are isolated from the systems that are responsible for immunity. And purchased – proteins that acquire foreign properties against thermal, radiation, chemical, bacterial, viral, and other factors. For example, an allergic reaction develops with glomerulonephritis, rheumatism, arthritis, hypothyroidism.
Present Simple: 1 My father works at school. 2 We often go to the cinema. 3 You runs in home. 4 He never drinks tea. 5 I need to take a holiday. 6 Do you play hockey? 7 I do not like rain. 8 Does he speak English? 9 She doesn't smoke. 10 I do want to help you. Present Countinuos: 1 I am doing my homework now. 2 Look! Our son is playing with a dog. 3 I am playing footbal. 4 Dad and me are fishing now. 5 Anna is doing her homework at the moment. 6 I am writing in order to draw your attention to the latest news. 7 Small flocks are flitting about. 8 Roman is cooking pizza. 9 Sasha is not listening to you. 10 Masha isn't sleeping.
How long has George worked as an artist?
It’s been two weeks since Martin went to school.
Tom had been buying these books for a few days.
Mom has driven her car on Saturday.
Bill has had got his laptop on his holiday.
How long have you known Pat?
The snow was here two years ago.
Mark and Eve just have been married.
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