用所给单词的适当形式填空。

1.I can do it _________ (easy).

2.I exercise fifty _________ (minute) every morning.

3. _________ (do) exercise is good for our health.

4.Eating more vegetables can make us _________ (health).

5.She _________ (clean) the room before she went out.

下列程序计算Sn的值。Sn=a+aa+aaa+…+aaa…a，其中最后一项为n个。
例如：a=5，n=4时，则Sn=5+55+555+5555。请在空白处填人适当的内容，将程序充完整。
Private Sub Command1_Click()
Dim a As Integer，n As Integer，Cout As Integer
Dim Sn As Long，Tn As Long
Cout=1
Sn=0
Tn=0
a=InputBox("请输入a的值：")
　【11】　
Do
Tn=Tn * 10 + a
Sn二Sn + Tn
Cout=Cout+1
　【12】　
Debug．Print a，n，Sn
End Sub