题目

 He became an actor at a very young age but it was nearly 20 years ______ he became famous.     A. until                       B. when                     C. before                   D. that 答案： C     句型：It’s /will be +时间段 before +从句：过了多久才……He is the only man ________ I can find for the work．A.who'sB.whoseC.thatD.which