2. Раскройте скобки, употребляя глаголы в Active либо Passive Voice. Переведите

2. Раскройте скобки, употребляя глаголы в Active или Passive Voice. Переведите предложения.

1. They (wrote/were written) many articles for the magazine last year. 2. All the graduates (defend/ are defended) their candidate theses before the Examination Board. 3. Many compulsory subjects ( will be taken/will take) by the first-year students. 4. These data (are refered to/ refer to) often. 5.The water (has boiled/has been boiled) already.