Choose the word or phrase (A, B, C or D) that best fits the blank space in the following passage:

LOOK ON THE BRIGHT SIDE

          Do you ever wish you were more optimistic, some one who always (21)________ to be successful? Having some one around who always fears the worst isn’t really a lot of (22)________ we all know someone  who sees a single cloud on a sunny day and says: “It looks like rain.” But if you catch yourself thinking such things, it’s important to do something (23)________ it. You can change your view of life, (24)________ to psychologists, it only takes a little effort, and you’ll find life more rewarding as a (25)________ Optimism, they say, is partly about self-respect and confidence, but it’s also a more positive way of looking at life and all it has to offer . Optimists are more (26)________ to start new projects and generally more prepared to  take risks.

          Upbringing  is obviously very important in forming your (27)________ to the world. Some people are brought up to (28)______too much on others and grow up forever blaming other people when anything goes wrong. Most optimists, on the (29)________ hand, have been brought up not to regard failure as the end of the world-they just (30)________ with their lives

Điền ô số 21