The author is required to _____ his book and send it to the publisher as soon as

The author is required to _____ his book and send it to the publisher as soon as possible.

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The machinery had been wrecked so efficiently that police were sure it was a cas

The machinery had been wrecked so efficiently that police were sure it was a case of ( )

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The _____ cause for the complaint is bad quality of the product.

The _____ cause for the complaint is bad quality of the product.

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It is recommended that the project _____ until all the preparations have been ma

It is recommended that the project _____ until all the preparations have been made.

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