A:make o
B:make of
C:have to
D:take of
先化简,再求值:(x﹣1)(x+2)﹣(x+1)2,其中x=2.
—You bought the computer about nine years ago?
—Yes. _______ it's old, it still works well.
The ____ are Jane's. They're ____ yuan.
如图,△ABC的顶点都在正方形网格的格点上,则cosC=____ .