—Did Jack come back early last night? —Yes. It was not yet eight o’clock _______ he arrived home.
Although this ____ sound like a simple task, great care is needed.
—She looks very happy. She ______ have passed the exam. —I guess so. It’s not difficult after all.
Thank you for all your hard work last week. I don’t think we ______ it without you.
John, look at the time. ___________ you play the piano at such a late hour?
—May I smoke here ? —If you ____, choose a seat in the smoking section.