Life in the future（Reference for Teaching）
(2)who leaves the room last ought to turn off the light.
答案：who改為whoever。因whoever相當于anyone who.本句anyone執行turn off這個動作。而who引導主語從句，它沒有“無論/不管誰”這種含義。
(3)his dream of being a singer has been come true.
答案：去掉been。因為come true意思是“實現”，為不及物動詞短語，不能用被動語態。
(4)she was not a bit frightened；in fact,she was nearly frightened to death.
答案：bit改為little。因為not a bit=not at all“一點也不”；not a little相當于very“很,非常”。由句意可知。她非常害怕，故要用not a little。
(5)you'd better not go out alone in the future.
答案：去掉the。因本句意為“你今后最好不要單獨出去”。in future“從今以后”，指說話時開始的全部將來時間；in the future“將來，未來”，指將來的某一時間。