1 . 将近一天之后，他才意识到他的错误并向他的朋友彼得道歉。
________ he realized his mistakes and said sorry to his friend, Peter.

2 . 这背后的一个关键原因是：一部电影通常不到两个小时，而一本书通常需要几天才能读完。(that引导的表语从句)
One of the key reasons behind this is that while a book usually ________________, a movie typically lasts under two hours.

3 . 这个问题至今已经困扰了我好几天。(puzzle) (汉译英)