The boss _____ the workers how to do it, or the accident couldn’t have happened.
David left word with my secretary ________ he would call on me in the afternoon.
Why do you turn off the light in the room? We are in total ______ now and I can’t see anything.
You’re our manager, so ______ or not you’ll attend today’s meeting is very important.
I wonder why you failed so many of the questions. Only the first question was difficult, but the rest, I thought, ______ very easy.
I will ______ Tom as soon as possible when I have enough money. I don’t want to be in debt for too long.