Jane, I have been told that you     to America．Have you got everything right?

A．have traveled

B．travel

C．would travel

D．are traveling

若窗体中已有一个为Command1的命令按钮、一个名为Label1的标签和一个名为Text1的文本框，且文本框的内容为空，然后编写如下事件代码：
Private Function f(x AS Long) As Boolean
If x Mod 2=0 Then
f=True
Else
f=False
End If
End Function
Private Sub Command1_Click()
Dim n As Long
n=Val(Me!text1)
P=IIf(f(n), "Even number", "Odd number")
Me!Label1.Caption=n&"is"&p
End Sub
窗体打开运行后，在文本框中输入21，单击命令按钮，则标签显示内容为______。