1→Complaints should be sent to the main office .
2.→The meeting had to be postponed because of illness.
3.→ A fire could have been caused by a short circuit.
4.→Next year's congress is going to be held in San Francisco.
5.→A fashion show will be held by the Sheraton Hotel this week.
6.→Further information can be obtained from the nearest post office.
7.→The oldest volumes from the library must not be removed.