For i = 1 To 10

  If a(i) >= 0 Then

    n=n+1

    List1.AddItem Str(a(i))

  Else

    m=m+1

    List2.AddItem Str(a(i))

Next

则该程序段出错的原因是缺少了（   ） 

    My cousin, Anna, is 118-year-old girl. She 2 in a middle school. She works hard at 3.Every day she 4 early in the morning. After that she reads English and 5 the English Radio Lesson. At 6:30 she6 by bike.

    Class begins at half past seven. There are four classes in the morning and two in the afternoon. After classes she does sports with her classmates.

    In the evening she 7 her homework. She likes 8 TV. But she only watches9on Sundays. I think she 10TV tomorrow.