'how are you' is the correct one

migration means leaving our place and going to live in another place ex: villagers in village are migrating to cities

correct

wanna = want i wanna play i want to play both are same

of course good u need practice english by speaking to someone who know english well

mining not meaning and goosebumps means the bumps which will appear on the skin when cold air touches your skin

correct

correct

i don't understand grammer

correct....