You are sure to fail the exam _________ you study hard.

I’ve never been to the Great Wall, whatabout you— ______. I think it must be very great.

It rained a lot during their journey, so they have had a good time. [ ]

Milk will turn sour soon on hot days ______ it is stored in the refrigerator

making copies at work, and someone came into theroom while talking on his cell phone. Should I have left _____ him privacy