Which word usually comes before superlative adjectives like BIGGEST, SLOWEST, etc?

1 .  you could took your exam in english 
    you can will take your exam in english 
2.   she  could translated this article  without a dictionary 
    she can will translated this artcile withou a dictionary 
3.    it was quite clear to everybody in the family that he must started getting ready for his exam instead of washing time 
     it will be quite clear to everybody in the family that he will be must start getting  ready for his exam instead of washing time 

4.  it was  impossible to do anything in such a short time . i must  asked the chief to pit up my report .
i will be  impossible to did anything in such a short time . I will be must asked the chief to pit up my report .

Strange to convince someone of the benefits of libraries. I would even say awkward, because it's the truth — the absolute and obvious. All the same what to speak about the need to be able to read, write and speak. But despite the obvious, it is necessary to prove its necessity.
      
                                                 ( Мини сочинение )
Перевод :

Странно убеждать  кого-то в пользе библиотек. Я бы даже сказала — неловко, поскольку это истина — абсолютная и очевидная. Всё равно, что говорить о необходимости уметь читать, писать и говорить. Но,  несмотря на очевидное, приходится доказывать свою необходимость.