Many young ladies in the street have __________ their summer dresses in late spring.
Teachers have to constantly update their knowledge in order to maintain their professional ____.
You must have read about Mark Twain long ago, ____?
Everyone doesn't agree to the plan. Some support it while I'm one of ___ opposed to it.
Tom, behave yourself! If you keep on doing that, you'll ____ in serious trouble.
I would like to buy some good English reference books, but _______ was available from the bookstore, where I only found some Chinese ones.