－Where is my umbrella, Mary?

－Oh, I’m sorry, I have ________ it on the bus.

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Social ________ change greatly from country to country.

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Please give me the reason ________ you were late this time.

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I was disappointed with the film. I had expected ________ to be much better.

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I ________ his gift, but I didn’t ________ it.

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China has a lot of islands, ________ is Taiwan.

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Tom, ________ you are looking forward to seeing, has come.

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“Who Moved My Cheese?”, ________ is a best seller, is written by Spencer Johnson.

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________ is known to all, the China leaders want to build a well-off society (富裕的社会) in all round was over the next five years.

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The sixteenth president of the U.S., ________ led the United States through these years, was shot in the end.

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