-- Did you read a book about customs last week?-- Yes, I found ______ very useful to know the customs of foreign countries.

 -- Did you read a book about customs last week?-- Yes, I found ______ very useful to know the customs of foreign countries.

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 ---Tony, ________ is my good friend, Harry.--- Hello, Harry.

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—A latest English newspaper, please! —Only one copy left. Would you like to have        , sir?

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I find _________difficult to work with the man.

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