Ответ:

#1

1. a), 2. b), 3. c), 4. b), 5. c), 6. a), 7. c)

#2

1. lessons, 2. courses, 3. gym, 4. subjects, 5. knowledge, 6. pupils, 7. literature, 8. exams

#3

1. All modern media sources keep us up-to-date.

2. Tapes and discs are rarely used nowadays.

3. You can (tell) about my trip in my blog. Пропущен глагол в задании, предложение без него не получается

4. The report will be published on the Internet.

5. The television was his only source of entertainment.