编写一个VB程序,实现如下功能:在文本框text1中输入英文句子,单击“第1个最长单词”按钮,找到第1个最长单词并显示在文本框text2中。运行效果如图所示

为实现上述功能,请在画线处填入合适代码
Private Sub Command1_Click()
Dim s As String, m As String
Dim n As Integer, c As Integer, max As Integer, t As Integer
s = Text1.Text
n = Len(s)
c = 0
max = 0
For i =" 1" To n
m =
① ‘截取字符串中的每个字符
If m >= "a" And m <= "z" Or m >= "A" And m <= "Z" Then
c =" c" + 1
Else
If c > max Then
max = c
t=" i" - 1
End If
c = 0
End If
If i =" n" Then
If c > max Then
max = c
t = i
End If
End If
Next i
Text2.Text = Mid(s,
② , max)
End Sub
(1) 程序中①处填入的代码是:
(2) 程序中②处填入的代码是下列哪个选项( )
A.t | B.t-max | C.t-max+1 | D.t-max-1 |