well it is correct but the grammar is wrong instead say "are you good at swimming" they both mean the same but this sentence a correct pronunciation.
No. We say we are good at something if we mean that we do it well. The sentence "You are good in swimming" might be correct, but only if "swimming" is the name of a course of study, just as we might say "You are good in French," meaning you get get high marks in French class.
no it is not a correct sentence.
This sentence is completely correct.
"My mathematics is good" is correct out of the choices given, but a better sentence would be "I am good at mathematics".
"Did you have a chance to speak with him?" is a perfectly good and correct sentence. It does not contain any grammar mistakes.
No, it is a verb
you have not to go swimming after a big dinner.
No, that is not the correct spelling of the word.The correct spelling is swimming.An example sentence is:The locals were warned against swimming in the murkylake.
no it is not a correct sentence.
"He is good" is correct. 'He' is singular, 'are' is for plurals.
Swimming in the summer sunshine was blissful
This sentence is completely correct.
That is the correct spelling of "swimming."
When a book is good, I get lost. It was this sentence grammatical corrected.
"My mathematics is good" is correct out of the choices given, but a better sentence would be "I am good at mathematics".
The correct sentence is: He is reluctant to speak in public.
We went swimming in the sea. The sea was calm/smooth/choppy/rough when we crossed the Channel.
I have no idea if it's safe to go swimming in the Southern Ocean...