—Would you mind if I borrowed your car just over the weekend?—I'm sorry, but it's just not possible, because I ________ my mother this weekend.
I think that he must be looking up the information in the library, ______?
I hope she gives up her job ______ it makes her crazy.
I can’t advise you what to do; you must use your own ______.
I don’t like talking on ______ telephone; I prefer writing ______ letters.
She keeps a supply of candles in the kitchen in case of power ______.