Поставьте the verbs in Passive Voice. a well-known,needs,to have,know,to transfer,keep,guard,may cause,may be,supported,may support,there are,includes,includes,use.
To be well-known
To be needed
To be had
To be known
To be transfered
To be kept
To be guarded
May be caused
May been
To be supported
May be supported
To be included
To be used
( это лишь предположение. Странное задание.)