—It's ___ the teachers' office.
A:in
B:on
C:near
____
(1)﹣4÷|﹣22×sin45°|+(﹣12)﹣1÷(﹣14×12)
(2)先化简(2x+2+x+5x2+4x+4)×x+2x2+3x,然后选择一个你喜欢的数代入求值.