1 . I am not ______(熟悉的) with the use of machines, so I really expect you to explain it in detail. (根据汉语提示单词拼写)

2 . They are already f___________ (熟悉的) faces on our TV screens. (根据中英文提示填空)

3 . After getting ______(熟悉) with the Chinese traditional festivals, they liked to live in China.

4 . He talked of other cultures as if they were more __________ (熟悉) to him than his own. （根据汉语提示单词拼写）