A. disturbing B. costly C. subsidiaries D. malfunctions
13. The customer complained about frequent system __.
14. IBM has a lot of __ in Asia.
15. The __ project was not approved.
16. The noise has been __ office workers.
16. The noise has been __ office workers.
17. The Security Department inspected the __ communications system.
18. We decided to __ the design.
19. The labor union __ the restructuring plan.
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