--- _______ will the fog and haze(雾霾) last? ---I have no idea. There is no sign of an end.
Don’t read in the sun! It isn’t good ________ your eyes.
—I’m going to HongKong for vacation. —____________.
Everyone in our class __________ to the Great Wall for vacation.
—Why don’t you have a notebook with you ? —I____ it at home this morning.
Stop_________! I have_______ to tell you.