Если бы вы хорошо подготовились к к

Если бы вы хорошо подготовились к контрольной работе, вы не сделали бы в ней так много ошибок.

Results (English) 1:

If you are well prepared for the tests, you would not make it so many errors.

Results (English) 2:

If you are well prepared for tests, you would not have done it so many mistakes.

Results (English) 3:

If you would be well-prepared for the verification work, you have not done so would be in it so many errors.