A 19-year-old teenager from Guangdong nicknamed Niko demanded an apology from Youku, which he believed violated their copyrights as it used his team's photos without ______.
Although the painting is very ____ pleasant, it is thought to be copied with a modern printing machine.
When I was at school, I _____ up very late, reading storybooks.
Could I speak to ____ is in charge of International Sales, please?
—Is there any news about my promotion?—I regret _______ you that we’ve chosen someone else for the job.
One side of the board should be painted yellow, and _______ white.