Поставьте, пожалуйста, в past progressive)…

Поставьте, пожалуйста, в past progressive) 1. A nurse (to bind) her patient, when the ward doctor came. 2. She (to make) injection to abed-patient when the students came into the ward. 3. The doctor (to take) the patient’s pulse, when the patient’s face got pale. 4. When he (to look) for some papers on his desk he saw a little bottle.