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（加试题）小王编写了一个猜价格的VB程序，程序界面如图所示。程序运行时，在列表框List1中显示20个随机生成的在[150,250]之间的价格及其序号。在文本框Text1中输入报价，单击Command1 “猜测”按钮后，在Label3中输出猜中价格对应的序号。

实现上述功能的VB程序如下，但加框处代码有误，请改正。
Dim d(1 To 20) As Integer
Private Sub Form_Load()
For i = 1 To 20                                   '生成20个随机价格
d(i)=Int(Rnd*100)+150                       ‘（1）________
Next i
For i = 1 To 19
For j = 20 To i + 1 Step -1
If  d(j) < d(j - 1) Then
t = d(j): d(j) = d(j - 1): d(j - 1) = t
End If

  Next j

Next i
For i = 1 To 20

List1.AddItem Str(i) + Str(d(i))

Next i
End Sub
Private Sub Command1_Click()
Dim baojia As Integer,i as integer, j as integer, t as integer , m as integer
Randomize
List1.Clear
baojia = Val(Text1.Text)
i = 1
j = 20
Do While i<= j
m=(i+j)/2                                      ‘（2）________
If  baojia = d(m) Then
Label3.Caption = "猜中  第" + Str(i) + "个"
Exit Do
ElseIf  baojia<d(m) Then
j = m - 1
Else
i=m-1                                          ‘（3）________
End If
Loop
End Sub