Test

A mix of the whole course: the form have / has been + -ing, the negative haven't been and the question Have you been…?, how long it has been going on (for / since / How long have you been…?), the activity We've been packing or the result We've packed, and verbs without -ing: know, want, have.

No new theory — only what you've already seen in the lessons. You can go in any order.