--Thank you very much for showing me how to use the new mobile phone.--- _______
Paula seldom comes late for school, _______ ?
I still remember the college and the teachers ___I visited in London years ago.
______, his leg got better and he could walk with a walking stick.
Tom is often made ______for twelve hours a day by the boss.
—How long have you ______ the book ? — For a week.