100 нужно iv. instead of the modal verbs use the equivalents in the proper tense: the doctor must determine the origin of the disease for its successful treatment. 2. the doctor could reveal the consolidation in the lung by the x-ray examination. 3. the scientist can observe a rapid growth of microorganisms under the microscope. 4. the doctor says that this patient may sit up.
1 The doctor is to/ has to determine the origin of the disease for its successful treatment.
2. The doctor was able to reveal the consolidation in the lung by the X-ray examination.
3. The scientist is able to observe a rapid growth of microorganisms under the microscope.
4. The doctor says that this patient is allowed/ is permitted to sit up.