Lesson 18 - Exercise 2 - Peter and Steve

Watch the video, then answer the question.

 
machine-like.jpgVocabulary:
Verbs: know, appear
Adjectives: machine-like, outgoing, biased, efficient
idiom: "let (their) hair down"
Tap on any word once (mobile), or double-click on any word (computer), to read an English definition.
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