1.We have created a webpage for our...........
We haven't created......
2. I have posted.......
I haven't posted......
3. She has looked........
she hasn't looked
4. My friend has changed.......
My friend hasn't changed.......
5.I have chated.....
I haven't chated...
6. we have downloaded.....
we haven't downloaded...
7. The internet has changed....
The internet hasn't changed.....
8. I have ordered a.....
I haven't ordered........