---We haven’t seen each other for ages.---No, I don’t remember how many years ago _______ I last saw you.
These plants are watered __ .
Guilin is __ worth __. Have you been to it?
The result of the experiment was very good, ___________ we hadn’t expected.
My family consider __ a computer, which is considered __ a great help in our work.
I’m __ pop music, but I’m not __ classical music.