Practice. Speak regularly in English to people that speak English well. That way , if you make any mistakes that person can correct you.
Music. Listen to English songs that you like, and sing along. Get the words right, and try to imitate the singer, singing things you enjoy makes it a better practice for you.
Reading. Read aloud when you are reading books, especially the hard words.
Tongue twisters. After awhile, try some tongue twisters. Say the words fast and as accurately as possible, this will help you in your quest to speak 'rapidly'.
Lastly , NEVER GIVE UP.
All the best :)
I can speak English fluently
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