—Look at these tracks. It __________ be a wolf.
—It needn't be. It ___________ be a fox.
| A．must; could | B．may; might |
| C．need; must | D．could; need |
Early experiences taught me not to be overly _about shopping by mobile phone because there is a high risk of being cheated．
| A．particular | B．enthusiastic | C．cautious | D．casual |
Although dishonesty seems so common in recent years, people still believe that honesty will not go out of．
| A．style | B．order | C．balance | D．shape |
Liao Fan, a Chinese actor, finally got to knowreal success tastes like when he won the prize for Best Actor at the 64th Berlin film festival．
| A．when | B．how | C．what | D．where |
Steve Jobs,after generation．rise to fame inspires millions of people, will be remembered generation
| A．what | B．which | C．whose | D．who |
Experts warn that medical waste from hospitals, ifproperly, may contribute to spreading diseases．
| A．not handled | B．not being handled |
| C．not to be handled | D．not having been handled |