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  • 1.It's important ____ programming languages with markup languages.
    a. don't confuse
    b. not confuse
    c. not to confuse
    2.Markup languages are used ____ the structure of web documents.
    a. describe
    b. to describe
    c. for describe
    3.You must learn ____ effective business letters.
    a. to write
    b. write
    c. writing
    4.Mr Keller has asked me ____ you these files.
    a. send
    b. sending
    c. to send
    5.This program will make this old PC ____ faster.
    a. run
    b. running
    c. to run

  • 1C, 2B, 4C, 5A

  • спасибо

  • 3А