Вкаких случаях используется глагол to have как ?

Вы употребляете have как глагол, когда вы говорите в present perfect или present perfect continious. 

It’s very important to choose the right food nowadays. healthy and balanced diet is useful for every person. different types of food contain different nutrients for our body. some supply us with carbohydrates, some with proteins or fats, some with vitamins and minerals, etc. one of the healthiest types of food is fruit and vegetables. such organic products can be only useful if they don’t contain any chemicals and additives, which has become a common phenomenon in modern supermarkets. more people tend to grow fruit and vegetables in their own gardens, instead of buying them.
the most dangerous for health is so-called “junk food” or food containing empty calories. it is food with low biological value and high content of solid fats, calories and sugar. this category includes carbonated soft drinks, sweets, fast-food, chips, chocolate bars and other snacks. for example, carbonated drinks, such as cola and pepsi contain no natural ingredients, and a lot of artificial chemicals – sweeteners, taste modifies and nature-identical flavourings, which are not just unsalutary. they are addictive like drugs – the more you drink, the more you want. lemonades don’t allay thirst, and their “refreshing effect” is just an advertising trick, no more. sweets that are sold in supermarkets, such as candy, biscuits, cakes and chocolate bars are also virtually uneatable. in order to extend their shelf-life, producers use various preservation agents and chemical additives. moreover, nowadays almost all natural ingredients are substituted with cheap analogues. so, store sweets contain palm oil, hydrogenated fats, milk powder and margarine. of course, sweets in general are not very healthy food, but if you can’t live without desserts, you’d better cook them at home using high-quality products. apart from “junk food”, there are other categories of unhealthy food, for example, manufactured meat products. this category includes all types of sausages, hamburgers, and any food made of processed meat. all sausage products contain very little meat and much animal fat, tallow, soya, ground bones and skin. these unhealthy saturated fats are accumulated in your organism, causing obesity. if you like meat, try to opt for natural low-fat red meat, poultry and fish, and avoid fatty pork and especially manufactured products. so, if you want to be healthy, pay attention to what you eat. if you like sweets, choose natural ones – honey, dried fruits, or, at least, natural bitter chocolate. if you can’t live without flour products, opt for wholegrain food. and please, never eat fast-food, convenience meat products and chips. and never drink cola.

ответ:

the top of mount washington.

объяснение:

in fact, this place is very beautiful, but being here is extremely dangerous. mount washington is located in the northeastern united states. let the tourists not be afraid that the height of the peak here is only 1917 meters. in fact, visiting this place is as risky as everest. the fact is that mount washington is the world leader in wind speed on the surface of the earth.   the highest rate was reached in april 1934, when air moved here at a speed of 372 km / h. if the yard is winter, then the wind turns into snowstorms. the complex of buildings of the local observatory instantly sweeps, save only tightly clogged windows and doors. the station is really extreme, its instruments and buildings can withstand wind speeds of up to 500 km / h, which is quite likely in this area. in winter, mount washington turns into a winter fairy tale, but very dangerous

перевод:

вершина горы вашингтон. на самом деле это место красивое, но находиться тут крайне опасно. гора вашингтон располагается на северо-востоке сша. пускай не пугает туристов, что высота вершины тут всего 1917 метров. на самом деле посещение этого места также рискованно, как и эвереста. дело в том, что гора вашингтон является мировым лидером по скорости ветра на поверхности земли. наивысший показатель был достигнут в апреле 1934 года, когда воздух двигался тут со скоростью 372 км/час. если на дворе зима, то ветер превращается в снежные бури. комплекс строений местной обсерватории моментально заметается, спасают разве что наглухо закупоренные окна и двери. станция действительно экстремальная, ее приборы и здания могут выдерживать скорость ветра до 500 км/час, что вполне вероятно в данной местности. зимой гора вашингтон превращается в зимнюю сказку, но опасную.