Откройте скобки, употребив глагол в правильной временной форме.

1.If you (not to listen) to the radio, why don’t you switch it off?
2.I (not to see) him yet, but two days ago I (to talk) to him on the phone.
3.I am writing in connection with the advertisement which (to appear) on December 3.
4.I (to try) to find a permanent job for a considerable time. I haven’t found it yet.
5.I (to read) some books by this writer, but I (not to see) this book yet.