用Who和Which改写句子Join these prompts提示 with who or which and mak

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  • (1) Human resource personnel are those who are responsible for the recruitment.

    (2) Marketing department is that which takes charge of market research and corporation marketing policy.

    (3) Oil is the product which is exported by Middle east.

    (4) Fax, printer, duplicating machine are machines which help businesses.

    (5) A programmer is someone who writes computer programs.