编写VB程序,实现如下功能:在文本框Text1中输入某一年份,单击“天干地支与生肖”按钮Command1,在列表框List1中输出该年份开始的12个年份及对应的“天干地支”与“生肖”,运行界面如图所示,程序代码如下。

(1)代码“Private Sub Command1_Click()”中的Click是
。(单选,填字母:
(2)为实现上述功能,请在划线处填入合适的代码。
Private Sub Command1_Click()
Dim a As Integer, b As Integer
Dim i As Integer, n As Integer
Dim c1 As String, s1 As String
Dim c2 As String, s2 As String
Dim c3 As String, s3 As String
List1.Clear
s1 = "甲乙丙丁戊己庚辛壬癸"
s2 = "子丑寅卯辰巳午未申酉戌亥"
s3 = "鼠牛虎兔龙蛇马羊猴鸡狗猪"
n = Val(Text1.Text)
For i =" n" To
① a =" (i" + 6) Mod 10
b =" (i" + 8) Mod 12
c1 =" Mid(s1," a + 1, 1)
c2 =" Mid(s2," b + 1, 1)
c3 =" Mid(s3," b + 1, 1)
List1.AddItem
② + "年" + c1 + c2 + " " + c3
Next i
End Sub
(3)由上述算法可知,2024年对应的“天干地支”为
。