Although her disease her eyesight and forced her to leave the dance floor, she refuses to fall into self-pity.
Does ______ matter if he can’t finish the job on time?
I don’t think ____ possible to master a foreign language without much memory work.
Is ____ necessary to complete the design before National Day?
I hate _______ when young people speak to the elderly in a rude way.
—How long are you staying there? —_________depends.