Вставьте пропущенные слова:

a) manage / management
1. He doesn’t ........... the company well. It spends too much money and it is not efficient.
2. ............ is composed of a team of managers who have charge of the organization at all levels.

b) performance / perform
1. Managers have to ........ some managerial functions.
2. The ......... of the car is very good.