1. ［2012沈阳模拟］We have made ________ clear that we are strongly against smoking in the office.
A. this B. that C. it D. one
2. He accidentally ________ he had stolen something from a shop and had been punished by the guards.
A．let out B．took care
C．made sure D．made out
3. ［2012福州模拟］But the unpleasant feeling of coldness disappeared at the ________ of his students pouring out of their classroom to give him a warm, wordless welcome.
A. sight B. scene C. view D. sign
