Chinese students are【21】willing to study very hard for long hours. This is an excellent【22】, but it is often an inefficient meth

Chinese students are (21) generally willing to study very hard for long hours. This is an excellent (22) characteristic, but it is often an inefficient method of study. An efficient student must have enough food, rest and (23) relaxation. You need to play ball, or sing a song, or go out with friends, see a movie, visit some (24) scenic spots. When you return to your studies your mind will be (25) refreshed and you’ll learn more.
    Shorter, more intense study sessions are more effective than endless, hours of nodding over your books.
    Finally, be (26) realistic. If you set impossible goals for yourself you can only be disappointed in your progress.
    (27) Psychologists have determined that learning takes place this way: first, you make a lot of progress and feel very happy. Then your language ability seems to stay the same; this period can last for days or even weeks. But you mustn’t be (28) discouraged. Perhaps we can say that learning English is like taking Chinese medicine. We don’t mean that it’s (29) bitter. We mean that, like Chinese medicine, the (30) effects of your study come slowly but surely. So, don’t give up along the way.