Помогите, пожалуйста. Грамматика.

  • The company in 5 is now using the tablets. Complete these zero conditional
    1 With the tablets, if the technician______(not know) the way to a
    job, he or she_____________(use) GPS to find the best way there.
    2 If the customer_________(be) happy with the job, he or she
    __________________________(sign) using the tablet’s screen.
    3 If a customer________(change) their order, the system
    __________________________(update) the details on the tablet.
    4 If a technician______(need) to order a new part, he or she
    ______________________(send) a message electronically.

  • Does not know, uses, is, signs , changes, updates, needs, sends