Time should be made full use of _________ ourselves.
She may have missed the train, ________ she won't arrive for another hour.
I could never_________ such a person as always complains everything.
________ he felt like ________, he reminded himself that he had a family to support.
So ________ student ________ that he can work out all difficult problems.
I’ll never understand how it __________that you were late three times a week.