Put the verbs into the Present Perfect or Past Simple.
Ann: How many stamps ______ you _____ (to collect) yet?
Kate: I ____ already _____ (to collect) five hundred stamps . You can see three albums.
Ann: But I ______ just _____ (to see) half of them.
Sam: Hello, Jim! I ______ (not to see) you for ages.
Where ______ you_____ (to be)?