sent , the butter factory is still polluting the river though it _____to stop.

Your house looks so beautiful! When did you buy it—I _________ since half a year ago.

was expecting her favourite singers,but to her disappointment, _______ appeared.

, you really should cut down on sweets You______ fatter every time we meet

n this way, directed by theteacher, ______work out the problem the day before.