.--- I’m sorry I stepped outside for a smoke. I was very tired.. --- There is no ________ for this while you are on duty.

—Some people believe that robots will take over the world one day.—What if that is the ________?

She bought the painting at a much higher______ than its real_______.

This law which has just been passed is a that the government will pay more attention to protecting wildlife．

The final _____ of the play will take place on Monday.