УПРАЖНЕНИЕ 4. Вставить артикль, где это необходимо: When drugs are administered to some patients … severe adverse reaction, such as collapse, may occur. This may be caused by … allergy to … drug administered, e.g. penicillin, or interaction with another drug which … patient is already taking for medical reasons. To prevent these undesirable effects … careful study of a case history must always be made before any drugs are used. If it is found that … drug allergy exists, or … patient is taking drugs prescribed by … doctor, or taking nonprescription drugs for self – medication this information must be recorded on … patient’s chart, regularly up – dated and … appropriate precautions taken.