在一个面积是60平方米的墙上有3个窗户,每个窗户的面积都是4平方米,如果粉刷这面墙,要粉刷的面积是 ____。
—______you study at home in 100 years?
—Yes, I______.
Everyone except Tom and John _______ seen the film.
如图,已知平行六面体ABCD﹣A′B′C′D′,化简AC'→+D'B→﹣DC→.