Shabbos Treasures 4: Asking Others to Do the Work

Is it OK to: 1) ask a Jew who isn't particular about Shabbos to turn off a light? 2) ask a non-Jew to turn your light on? 3) ask a non-Jew to turn your annoying alarm off? 4) ask your non-Jewish cleaner to clean up from Shabbos? 5) ask your non-Jewish cleaner to set up for Saturday night event?  6) plug in your freezer which is full of meat when the plug got knocked out? 7) ask a non-Jew to bring you Challah from your neighbor when there is no eruv when you realise on Shabbos that you have run out of Challah?