Task 1. Write sentences in the Present Perfect Tense.
l) Has a virus (attacked) your computer recently (?)
2) She (has not created) a blog with her photos. (-)
3) I have already (visited) a chat room (+)
4) What have they (written) on the message board (?)
5) My friend (has not changed) his email address and password(-)
6) We (have sent) an email attachment (+)
