It _______ to me that we still have many things to do, so I went back to my office at once.
It was April 29, 2011 _____ Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.
The days are gone _____ physical strength was all you needed to make a living.
______ volleyball is her main focus, she’s also great at basketball.A Since B. Once C. Unless D. While
---I need to advertise for a roommate for next term. ---______ ? Mary is interested.
It sounds like something is wrong with the car’s engine. _____ , we’d better take it to the garage immediately.