13 Dec 2019

  • Korean
  • English (US)
Closed question
Question about English (US)

What does "They started to be concerned all the sudden."

My question is what 'all the sudden' means.
suddenly or ???
and also I wonder this is right expression grammatically.


[News] Hey you! The one learning a language!

Share this question
Related questions
Similar questions
Newest Questions
Topic Questions
Recommended Questions