Willpower is a kind of quality, ______ is ______ it takes to do anything well.
___book I read yesterday is so interesting that I want to read it___ second time.
----How often do you eat out? ----__________,but usually once a week.
---I went to the beach and got plenty of rest. --- ________ You looked tired last time I saw you.
I like swimming, while what my brother enjoys ____.
Americans eat____ vegetables per person today as they did in 1990.