or Gerund [doing something]? 
Click the correct form in each sentence below. Does the meaning of the sentence require the noun or gerund form? Green answer is correct.
1. A mechanic works at [maintaining maintaining / maintenancemaintenance] vehicles.
2. Keeping up your vehicle's [maintaining maintaining/ maintenance maintenance] schedule is important for safety.
3. Louise is a therapist who helps people with stress [managing managing / managementmanagement].
4. [Managing Managing/ management management ]stress requires a lot of self- [disciplining disciplining/ disciplinediscipline].
5. Fred lost [controlling controlling/ control control ]of his car and had an accident on the freeway.
6. [Controlling Controlling/ control control ]drivers' speed by radar is one way of [eliminating eliminating / elimination elimination ] accidents.
7. The plane's [arriving arriving / arrival arrival ] time has been delayed.
8. The instructor lowered Mia's grade for always [arriving arriving / arrival arrival ] late to class and for poor [ attending attending / attendanceattendance].
9. The owner of the company wouldn't accept John's [apologizing apologizing/ apologyapology] for [mismanaging mismanaging/ mismanagementmismanagement] the finance department.
10. Jenny has a bad cold. Her sides hurt from [coughing coughing/ coughcough] all night.
11. You have now completed this [ exercising exercising/ exerciseexercise] on nouns and gerunds.