Dear sir / madam:
     I would like to 1           Jack for this term's Best Student 2          .
     Jack is a clever boy. He 3           things quickly. He is the 4           of Class 1, Grade 7. He always thinks
of others first. He can 5           class activities well.
     He is good at all the 6         , especially English, Chinese and 7          . He has good grades in Maths, too.
He often helps other students with their lessons.
     He often gives a seat to the 8           on the bus and 9           money for Project Hope. Jack is really kind.
     I am looking 10           to hearing from you soon. 
                                                                                                                                  Yours faithfully
                                                                                                                                   Wu Beng

1. Jim is in Class ______ (11), Grade Seven.
2. Those are ______ (13) buses.
3. ______ (15) is my lucky (幸運的) number.
4. Double nine is ______ (18).
5. Jack is ______ (20) years old.