Open the brackets paying attention to the tenses you use. 1.

Open the brackets paying attention to the tenses you use. 1. The nurse (to return) to the operating room before the operation (to start). 2. He (not to bandage) the limb when the bleeding (to start) again. 3. The blood (to transfuse) by 5 o clock yesterday. 4. W hen the assistant (to come) to the laboratory a few glasses (explode) already. 5. The boy (to fracture) his leg before the help (to come). 6. We (to hold) our meeting by the end of the next week. 7. H e (to incise) the tissues by the time our teacher comes. 8. I (to draw) the scheme of the neuralgia cells today 5 o clock. 9. By two o clock the surgeon (perform) appendectomy.