1.Have you ever seen the famous ________(喜剧) Twelfth Night by Shakespeare ?
2.We are not allowed to________ (靠近) the forbidden area.  
3.He has got a ________ (独特) opportunity to study abroad.  
4. Can you understand this passage without __________（解释）?
4. The ________ (发现) of radium has helped many people.    
6. This road is about 1,000 meters in _________（长）.
7. The professor will fly ________(直接) to Tokyo tomorrow morning.
8. Hard work leads to success and ________（失败）lies in laziness.
9. For _____ (各种各样)reasons, he had to leave his homeland.
10. Seconds count in_____ (紧急情况) and knowing what to do can mean the difference
between life and death.