To write a good article you must first ________your ideas very carefully.
One split second later your life or someone else's life could be gone ________ you are just glancing at your phone to check a text message.
Mr. Smith doesn't go to his usual club, ________ it is being decorated these days.
________ you need something, please don't hesitate to let me know.
—Was it 11 o'clock ________ your father came back last night? —Yes, he is always coming back so late.
—I don't mind how you do it ______ you finish the painting on time. —OK, I see.