Replace the infinitives in brackets by the necessary tense-form: 1. last year our family (to stay) at the metropol hotel. 2. it (to be) a many-storeyed building with all modern conveniences. 3. as for me i (to prefer) to reserve a room in advance. 4. if we (to engage a room) at this hotel next time we (to reserve) a suite. 5. while you (to fill) in the form at the reception desk the porter (to take) your things upstairs. 6. he informed the receptionist he (to vacate) the room in due time and (to ask) to get his bill ready.