Заполните пропуски модальными глаголами can, may, must, should. 1. In man,

Заполните пропуски модальными глаголами can, may, must, should. 1. In man, obstruction of the common duct ... produce abdominal symptoms and increase of serum amylase. 2. An ulcer .... only on an epithelial or mucosal surface. 3. Appendicitis ... be of different grades of intensity. 4. In an attack of acute appendicitis nb food ... be taken by mouth and no water except in very small sips. 5. There was general agreement that the patient39;s diet .. be rich in protein and carbohy drates, but poor in fat.