What can you see ________ our classroom?[ ]
A. on
B. at
C. in
答案：C
The teacher would rather the boy ________ what she demands ________ him to set the bird ________ free .
A．to do ; of ; caught alive
B．did ; from ; being caught living
C．had done ; for ; caught lovely
D．did ; of ; caught alive
如何检验软水和硬水？
