Task: Translation
Input (Japanese): 次の10年間、ホッパーはゲスト役としてしばしばテレビに出演し、1960年代末までにはいくつかの映画の脇役を演じた。
Output (English): Over the next ten years, Hopper appeared frequently on television in guest roles, and by the end of the 1960s had played supporting roles in several films.