—Oh, no ! There is no sugar left . —_____. I’ll buy some when I go into town.A ,Good idea B. Not at all C. Never mind
This is the most beautiful park I have _____ visited.
Xi’an is a city with many places of interest and __ tourists come here every year.
—_____ you _____ your homework yet? —Yes, I _____ it ten minutes ago.
It’s necessary for you _____ exercise every day.
—I _______ here since I was five years old.