'Alone' in the Bible

And Ehud came to him, as he was sitting alone in his cool roof chamber. And Ehud said, "I have a message from God for you." And he arose from his seat.

behold, I am laying a fleece of wool on the threshing floor; if there is dew on the fleece alone, and it is dry on all the ground, then I shall know that thou wilt deliver Israel by my hand, as thou hast said."

And she said to her father, "Let this thing be done for me; let me alone two months, that I may go and wander on the mountains, and bewail my virginity, I and my companions."