It’s so surprising to hear from my school teacher again. ______, we last met more than twenty years ago.
The money collected should be made good use ________ the people in Taiwan who suffered a lot in the earthquake.
Watch out! Don’t get too close to the building walls are being painted.
Even though the workers were not satisfied, they _____ to the boss finally.
He was __________ at the __________ waste of food in the school.
The doctors insisted that the patient was in danger, and that he __________on immediately.