It’s good for your health _____ every day.A. to exercise B. to exercising C. exercise
—_____ do you like science? —Because it’s interesting.
—You must _____ a letter to your mother tomorrow. —Well, I will, Dad.
—_____ does Kangkang meet his friends? —Four times a month.
Mr. Wang _____ gets up early. So he is ______ late for work.
—Shall we go to the amusement park right away or next weekend? — ______Any time will do.