1. If it's not the right size, __ it back here and we'll change it for you. 2. Mr Harris isn't here at the moment. Can I ask him to __ you back? 3. The doctor says he'll __ back and see me again tomorrow. 4. Some of these goods are damaged so we'll __ them back to the supplier. 5. The system is down at the moment but it'll __ back up soon. 6. The new system of processing orders isn't working. Do you think we should __ back to the old system? 7. Please __ the files back on the shelf when you finish with them. 8. I sent her a card last month but she didn't __ back. daje naj