How many examples of the present perfect
continuous can you find?
Recently
, I've been teaching myself ...
А) at least an hour every night. I've really been enjoying it
B) on my phone and I've been practising for
C)to play the guitar. I haven't been doing it for
D) tutorials on YouTube! I've been watching them
E) very long, just a few weeks. I've been using
and I'm learning pretty fast!​

ответ;

1. 68-year-old  2. good-looking  3. world-famous 4. action-packed                                                     Объяснение;                                                           1. Age. (68-year-old)                                                 2. Any thing being that looks good. (good-looking)                                                                       3. Everything that has become widely known around the world. (world-famous)                           4. Everything that has become widely known around the world. (action-packed)

С первым заданием не могу, тебе нужно смотреть в Аппендиксе 1, он находится в конце учебника, ты увидишь, там уже будут слова, которые нужно будет вставить в это задание, с данными предлогами.

2. 1) Sympathize
2) apologize
3) summarize
4) characterize
5) criticize
6) modernize

2b 1)Sympathizing help us to find new friends
2)Summarizing help us to learn maths
3) Modernizing help us to improve our lives
4) Criticizing help other people to correct their mistakes
5) Characterizing help us to find a good job
6) Apologizing help us to find a compromise with people
3. 1. At 2. In 3. In; In 4. In

Буду благодарен за лучший ответ)