课外体育活动的实施是一个（）以为主，（）为辅；宏观调控指导，微观自主开放为特点的操作过程。
参考答案：自觉自愿；强制规定
—I can’t find Mr. Smith. Where did you meet him this morning?
—It was in the hall ____ our products were showed..
A．that
B．which
C．the one
D．where
