a. Fill in: first, accent, native, body, language, tongue, speech, talk.

Answer:
1-Body
2-First
3-native
4-accent
5-language
6-talk
7- speech
Explanation:
1- Body Language is a type of nonverbal communication. A Mix of gestures, postures and expressions.
2,3- First language, native language or mother/father/parent tongue is a language that a person has been exposed to from birth.
4- Accent a distinctive mode of pronunciation of a language, associated with a particular nation, locality, or social class.
5- Language is a system of communication. Spoken, manual or written symbols.
6- polite conversation about things that are not import and controvertial, especially on social occasions.
7- Figure of speech is a phrase or word that has different meanings than its literal meanings.