填入下面文段空白处的词语，最恰当的一组是　　培育一位电影明星，①   从经济成本②  从时间成本看都是昂贵的。一个明星的成长 ③   有漫长的过程，还要有天赋和种种机缘。④   还有更为紧要的前提，⑤   明星必须扮演某个角色，借角色而成名，如扮演埃及艳后、扮演安娜·卡列尼娜或特工“007”等。⑥   作为成功的角色的明星，才能成为生活中的明星。

He’s got himself into a dangerous situation______he is likely to lose control over the plane

In China, the needle treatment dates __ ancient times.

was just talking to Margot when Jackson ________.

Not only John and Tom but also their sister, Mary, _______ great interest in the piano lessons.