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Paraphrasing the question

Fluency

Give examples

Talk about benefits

Mention about popularity

Discuss the opposites

Choosing the right word (in the list of synonyms)

Using idioms in the right context

Feeling free to take your embarrassment on unfamiliar topics

Choosing the right word (in the list of synonyms)

baffle (v)

/ˈbæf.əl/

bewilder (v)

/bɪˈwɪl.dər/

perplex (v)

/pəˈpleks/

Feeling free to take your embarrassment on unfamiliar topics

The important thing is...

coherence

It's okay to say..

- I have no idea about.., however

- Well, I have to say I'm not good at dancing and to me..., but

Using idioms in the right context