Linda _____________ at home now, but I’m not sure. Why not have a try?A must be B might have been C may have been D might be
Beethoven is my favorite musician. I regard him ______ other musicians.
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.