АНглийский, помогите пожалуйста! Нужно раскрыть скобки, употребив глагол в…

АНглийский, помогите пожалуйста! Нужно раскрыть скобки, употребив глагол в нужном времени и форме! Open the brackets using the proper tense forms. UKpublic administration Over half a million men and women (to employ) in the huge number of offices. The employees (not to change) with governments, but (to serve) ministers from any political parties in power. There (to be) different grades in the Civil Service. The lowest grade (to compose) of the clerks and typists who (to deal) with letters, or (to prepare) the information required for their seniors or of members of the public. In charge of them in the next, higher rank, (to be) the men and women in the Executive Grade. Their duty (to be to carry out) the details of legislation. The highest grade of all (to represent) the Administrative Grade, composed of the chief officials who (to advise) the Minister in charge of a department and (to decide) how laws (to be implemented).