How long have you _______?
I do hope the film ______ tomorrow will be much more wonderful than the one _____ yesterday.
Do you know the Three Gorges Dam is the largest hydro-electric dam ever_______?
English is a language shared by several different cultures, but each of ______ uses it somewhat differently.
Have you ever had the case _______ you can’t recognize your friend’s voice on the phone?
He made another wonderful discovery,_____ of great importance to science.