________ that has happened is a waste of time.
Tom: "___________________ " Mike: "I won't say no!"
The phrase "keeps sellers on their toes" in the passage mostly means "______".
I am sorry I have no time at present to____________________ detail of our plan.
The boat was sailing north when a terrible storm_____________ .
In spite of her abilities, Laura has been_____________________ overlooked for promotion.
The examination was not very difficult, but it was_____________________ long.
______ one of the most beautiful forms of performance art, ballet is a combination of dance and mime performed to music.
He_______________us but he was short of money at the time.
_______ has been a topic of continual geological research.
We all agree that she is____________________ student in our class.