vb中弹出inputbox对话框后，计时器不运行，这是怎么回事呢？谢谢！

Question

题目要求是：随机产生一个一位数与两位数算式，用户计算结果，系统计时并记分
这是我的代码
Private Sub Command1_Click()

Dim y%, n%, m%, c%, fenshu%, dengshi$
y = 0: n = 0: m = 0: c = 0: fenshu = 0
Randomize
For i = 1 To 10
a = Str(Int(Rnd * 10 + 0))
b = Str(Int(Rnd * 90 + 10))
dengshi = a & "+" & b & "="
Print dengshi;
daan = Val(InputBox("请输入第" & i & "题答案"))
If daan = Val(a) + Val(b) Then
chengji = 10
n = n + 1
Print daan
Else
Print daan; "答案不正确"
daan1 = Val(InputBox("答案不正确，请在此输入"))
If daan1 = Val(a) + Val(b) Then
chengji = 5
Print dengshi; daan1
m = m + 1
Else
chengji = 0
Print dengshi; daan1
c = c + 1
End If
End If
fenshu = fenshu + chengji
Next
y = n + m
Print "总成绩："; fenshu
Print "正确个数："; y
Print "其中第一次做对个数："; n
Print "第二次做对个数："; m
Print "做错个数"; c
Command1.Caption = "再做一套"
Command2.Enabled = True
End Sub

Private Sub Command2_Click()
End
End Sub

Private Sub Command3_Click()
Timer1.Enabled = True
Command1.Enabled = True
End Sub

Private Sub Command4_Click()
Form1.Cls
End Sub

Private Sub Form_Load()
Command2.Enabled = False
Label1.Caption = 0
Command1.Enabled = False
End Sub

Private Sub Timer1_Timer()
Label1.Caption = Label1.Caption + 1
If Label1.Caption = 60 Then
Timer1.Enabled = False
Label2.Caption = "时间已到"
Label1.Caption = ""
Label3.Caption = ""
Exit Sub
End If
End Sub

Answer 1

不要用inputbox，他会把进程挂起来，最好用窗体的label控件来做问题框，textbox控件来做输入框。

Answer 2

正常呀，弹出后程序会停在这里等待输入。
如果不想停的话那就自己做个对话窗口就可以啦。

Answer 3

MsgBox 和 inputbox 都会让程序停在这里等待
最好就是自己做一个对话窗口.