Поставьте глагол-сказуемое предложения в past simple tense (прошедшее простое время), употребляя модальные глаголы can, may, must и их эквиваленты: 1. he may be in the garden, collecting flowers. 2. i can do this experiment myself. 3. you must study biology at the university.

1. he might be in the garden, collecting flowers.

2. i could do this experiment myself.

3. you had to study biology at the university.

Good health is very important for each person. health is result of love to itself. it is very important to watch the way of life always. people neglect the health. badly eat, smoke, drink, don't play sports. immunity weakens. people start being ill. then ask for the help doctors. doctors conduct examinations. make the diagnosis. and then write out tablets or pricks. all this helps to return our organism to an initial state. but because of frequent reception of medicines there is an accustoming. the medicine is very developed presently. but it isn't enough advantage of it. quinsy medicine ruins kidneys. skin diseases medicine worsens work of heart. you shouldn't hope on the doctor and drugs. not always in the power of the doctor healing of the patient. that there were no problems with health it is necessary to strengthen the immunity. to consume daily norm of vitamins, waters, fats, carbohydrates, etc. also you shouldn't forget about sport. sport plays an important role in human life. morning exercises, the correct breath, walks in the fresh air and small physical activities will help to keep a tone and good mood. health outweighs all other good things of life before that really healthy beggar, is happier than the sick king