Let me know if there is anything I can do.
Let me know if I need to make any changes.
I always thought that suffering a heart attack was an omen of death.
The siren sounded an emergency.
Please don't let him know the real name of his illness.
About the same time as he entered the classroom and arrived at his seat, the chime to announce class rings across the school.
Have you acquainted your parents with your plans?
Please keep me informed of whatever happens in my absence.
Let me know whenever you come.
If by any chance he comes here, I'll let you know at once.
Should you change your mind, let me know.
If you should change your mind, let me know.
If you should find any mistakes, please let me know at once.
If anything bad should come about, let me know.
Should anything happen to you, let us know at once.
If he should come here, I will let you know at once.
If you should change your mind, let me know.
If you see a suspicious person, please inform the police.
She married without her parents' knowledge.
She informed him of her arrival.