All the trees are ______ with fruit, promising a harvest year.

A．covered

B．buried

C．surrounded

D．heavy

在窗体上画一个命令按钮，其名称为Command1，然后编写如下代码：
Option Base 1
Private Sub Command1_Click()
Dim Arr
Arr=Array(43,68,-25,65,-78,12,-79,43,-94,72)
pos=0
neg=0
For k=1 To 10
If Arr(k)＞0 Then
______
Else
______ End If
Next k
Print pos,neg
End Sub
以上程序的功能是计算并输出数组Arr中10个数的正数之和pos与负数之和neg，请填空。