短文改错
       此题要求改正所给短文中的错误。对标有题号的每一行作出判断：
      如有错误(每行只有一个错误),则按下列情况改正：
      此行多一个词：把多余的词用斜线()划掉,在该行下边横线上写出该词,并也用斜线划掉。
      此行缺一个词：在缺词处加一个漏字符号,在该行下边横线上写出该加的词。
      此行错一个词：在错的词下划一横线,在该行下边横线上写出改正后的词。
      注意：原行没有错的不要改。
                    

Last weekend, I help my grandparents prepare their trip    to Beidaihe. In Saturday morning, together with my grandparents, I searched Internet for the train schedule, the weather in Beidaihe,   and some hotel information. In the afternoon, I went back to the train  station and managed to buy two ticket for my grandparents  because there was a long queue. After dinner, I packed the suitcase with the things their grandparents needed, such as clothes,  glasses, a umbrella, and a map. The next morning, I went to  the station to see them off. Waved goodbye to them on the  platform, I felt happily for them and wished them a safe journey.	1.________ 2.________ 3.________ 4.________ 5.________ 6.________ 7.________ 8.________ 9.________ 10.________
1. help—helped   2. in—on     3. internet前加the   4. 去掉back    5. ticket—tickets     6. because—though/although   7. their—my       8. a—an       9. waved—waving    10. happily—happly
_____ I do feel pity, I can’t really do very much to help them out of the difficulty.
[     ]
A. As long as         B. As           C. while         D. Even
We can succeed ________ everyone in the team tries his best.
[     ]
A. only if     B. if only   C. unless       D. until
Several weeks had gone by ________ I realized the painting was missing.
[     ]
A．as   B．before C．since   D．when
______Jay Chou hums or sings，his fans love him and his songs.
[     ]
A. Whatever     B. Whenever     C.Whichever D. No matter
______ I admit that the problems are difficult, I don"t agree that they can"t be solved.
[     ]
A. In case B. While   C. As       D. Because