—How much ______ this pair of shoes?—Ten dollars ______ enough.A. is, is B. is, are C. are, are
Take more exercise every day, or you may ___________.
—______ can you cure my father, Doctor? — In about a week.
Smoking is bad ___________ health. You must give __________.
Since then, my aunt many homeless children.
Is this the museum you visited last Sunday?