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 (+)