1. Chinese history is filled with great ____________(成就) in science and technology    
2. She was ____________(满意的) with her birthday presents from her friends.        
3. When I came to the riverside, I found a boy ___________(挣扎) in the water.        
4. It is our duty to ____________(保卫) our motherland.                      
5.The four poles, ___________(支撑) the ceiling were well built.                    
6. He has made several ___________(发现)in science.                            
7. Children are taught to __________(尊敬)their teachers in the kindergarten.          
8."Mind your___________ (行为) , "the mother said to her young boy.              
9. I could hear them ____________(私语)under the tree over there .                  
10. Usually children are ____________(好奇的)about everything they see and meet.      

1. When I came to the riverside, I found a boy __________(挣扎) in the water.    
2. At ________(高度) of four miles, the air becomes too thin to breathe.
3. She hopes to be a __________(音乐家) in the future.
4. The _______(战士)  was praised for rescuing the child from drowning.
5. People should wash ______(定期)to ensure personal health.
6. Miss Green lives on the _______(十二)floor. We'd better take the lift.
7. The_______(秘书) informed me of his arrival by telephone.
8. Is it convenient for you to spare some time? I'll go and see you next ________(星期四).  
9. The thief ________(承认) his crime when he was questioned by the police.
10. The voice on the phone sounds _________(熟悉) to me.