问题补充：
his career as an actor he never gave up his hope of becoming a Hollywood star.
A. Throughout
B. Within
C. For
D. In
答案：
(答案→)A. Throughout
B. Within
C. For
D. In
解析：A句意：在他整个演艺生涯中，他从未放弃成为好莱坞明星的梦想。throughout表示时间时，意为： during all of a particular period，from the beginning to the end，强调“在……的整个期间”；in和within都可表示“在……(时间)内”，但不能强调自始至终，故被排除；for表示时间，后需要一段时间，如for a year/month等。
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