be aware of

知道

be afraid, be afraid of doing sth., be afraid of sth.(sb.), be afraid to do sth., be alert to, be alike to, be alive to, be all ears, be ashamed of, be ashamed to do, be assigned to do, be associated with, be astonished at, be at ease with, be at the end, be at war, be attached to, be attentive to, be available for, be available to, be beneficial to, be better off, be blessed with, be blind to, be bound for, be bound to, be bound to do, be bound up in, be bound up with, be burned to a crisp, be busy doing, be busy with, be capable of, be careful of, be careful with, be caught up in, be cautious of, be centered on, be central to, be certain of,