---Could it be in the restaurant_____ you had dinner with me yesterday ______ you left your keys?

It was five hours _____ the French climber reached the top of the world’s tallest building.

He must have been annoyed by something yesterday, _____?

Never in my wildest dreams ________these people are living in such poor conditions．

—Bob, look what you have done! You ruined the experiment.
—It’s not my fault. I just carried out the instructions _____.

Tom’s pay depends on ______ the factory.

Mrs Black doesn’t believe her son is able to design a digital camera, ______  ?

Life is like a play; it’s not the length, but the excellence of acting ________ matters.

I am busy with my work, so I will give my ticket for the concert to _______ wants to enjoy it.

－Have you got any particular plans for the coming winter vacation?
－Yes, _     , I'm going to visit my grandparents．