Нужно выбрать правильный вариант ответа 1. It is quite common to hear someone complain that his/her memory is (less good/worse/not as good) as it used to be.
2. Regular reviewing of what has been learned is (better/one of the good/one of the best) ways of strengthening memory.
3. I was not so much surprised (as/then/that) shocked by the result.