右框内划线处的内容可以是(    )

Private Sub Command1_Click()

 i＝1

 j＝7

 Do While ____①____

i＝____②____

j＝____③____

 Loop

 Text1.Text＝Str(i)

 Text2.Text＝Str(j)

End Sub

则下列说法正确的是（  ）

Dim n As Integer, i As Integer, left As Integer, right As Integer, m As Integer

Dim a(1 To 10) As String, t As String, key As String n = 6

a(1) = "35": a(2) = "20": a(3) = "18": a(4) = "8": a(5) = "274": a(6) = "47" For i = 1 To n - 1

For j = n To i + 1 Step -1

If a(i) < a(j) Then

t = a(i): a(i) = a(j): a(j) = t

End If

Next j

Next i

key = Text1.Text

left = 1: right = n

Do While left <= right

m = (left + right) \ 2

If a(m) = key Then Exit Do

If a(m) < key Then right = m - 1 Else left = m + 1

Loop

若在文本框 Text1 中输入“212”，则程序运行结束后，m 的值为（  ）