My friend warned me ______ going to the East Coast because it was crowded with tourists.
She knew nothing about his journey _______ he was likely to be away for three months.
“How did the robber get in?” “______ an open window on the first floor.”
_______ reading the letter, what has he done?
They promise that the work would all be finished _____ next week.
_____ their inexperience, they’ve done a good job.