—I’m sorry to have kept you waiting long.
—Never mind. I ____ here for only a few minutes.
因为come,arrive是瞬间动词，在用于现在完成时时，不能与表示一段的for,since构成的时间状语连用。答案为A。
—I’m sorry to have kept you waiting long.
—Never mind. I ____ here for only a few minutes.
—Will you be back ____ five in the afternoon?
—I’m not sure, maybe later than that.
如图，O为坐标原点，直线l⊥y轴，垂足为M，反比例函数y＝k/x（k≠0）的图象与l交于点A（m，3），△AOM的面积为6
（1）求m、k的值；
（2）在x轴正半轴上取一点B，使OB＝OA，求直线AB的函数表达式．
Roy made several kites, but _____ of them can fly high in the sky.
如图，△ABC中，AB＝AC，∠B＝72°，∠ACB的平分线CD交AB于点D，则点D是线段AB的黄金分割点．若AC＝2，则BD＝______．
—Have you finished your work yet?
—No, not yet. I think it’ll take _____ ten minutes.
