He's been ___________(sing) karaoke ______ a long time.
He's been singing karaoke for a long time.
We've been ___________ (watch) a scary movie ________ 2 weeks.
We've been watching a scary movie for 2 weeks.
She's been ___________ (collect) books _________ she was eleven.
She's been collecting books since she was eleven.
He's been _________ (read) the books ________ yesterday.
He's been reading the books since yesterday.
He's been ___________ (solve) the Rubik's cube ________ last month.
He's been solving the Rubik's cube since last month.
