1 . ________ (不会用) a computer makes it more difficult for him to do his academic research. (use) (根据汉语提示完成句子)

2 . Popularly ________ American films ever made, The Godfather is a milestone of cinema. (regard)
《教父》被普遍认为是美国有史以来最好的影片之一，是电影界的一个里程碑。

3 . He believes that children          （应允许……学习）at their own pace ; （allow）

4 . They sat together around the table , with          （门关着）.（shut）