Which of the sentences is correct?

Why have you done this?

Why you had done this?

Why you have done this?

Why did you done this?

Description (বিবরণ) :

প্রশ্ন: Which of the sentences is correct?

ব্যাখ্যা: এটি Present perfect tense এর Form এ হবে। তাই done এর পূর্বে have হবে। বাক্যের অর্থঃ কেন তুমি এটা করেছো?

Related Question

Do not worry, English grammar is not-to understand. Which of the following best fits in the blank space

so difficult

very difficult

too difficult

difficult enough

We (not have) a holiday since the beginning of the year.- Which of the following verb forms best completes the above sentence ?

did not have

have not had

are not having

had not had

If I were you, I (handle) the situation more carefully. -Which of the following verb forms best completes the above sentence ?

would handle

will handle

handle

would have handled

It`s time (you realize) your mistakes. Which of the following clause best fits in the above sentence ?

you realized

that you realize

you would realize

you have realized

We have recently entered--an agreement with the Inland Co-operative Socicty. - Which of the following best fits in the blank space ?

no perposition

upon

in

into

The boy from the village said, "I- starve than beg."- Which of the following bestcompletes the above sentence ?

better

rather

would rather

would better