মেধার বলে একজন শিক্ষার্থী জীবনে সফল হয়-এর সঠিক অনুবাদ কোনটি?
A student succeed in life by dint of merit.
A student succeeded in life by dint of merit
A student succeeds in life by dint of merit
A student succeeds at life by dint of merit
How many types of parts of speech are there?