Как правильно поставить глагол в скобках в the present perfect they to translate ) such difficult texts.

Have never translated

They have never translated such difficult texts

1) My brother is taller than my father. 2)Are you taller or younger than youre brother? 3) Our street is silence, than yours. 4) English language is not harder than Germany. 5) July is hotest month in the year. 6) In November weather is most rainly. 7) The more you stady, than more you know.8) He is fater than his brother. 9) This film is not as interesting as love story. 10)This text is harder. 11) Volga is longer than Danube. 12) Oleg is smartest in the class. 13) Tower in Moscow a lot bigger, than in Usurisk. 14) He was the most latest in distance. 15) My girlfriend is prettier and smarter than yours.

1.You will miss the train if you don`t take a taxi.

2. I won`t go away till you come back .

3.I`d like to know when your sister comes back to Leningrad .

4. I would like to know the day your sister comes back to Leningrad .

5. I was not sure if he would be at the meeting, but if he comes he will debate.

6. While the ladies are at their rooms, I will come downstairs and try to get you something to eat.

1. When I find Olya and bring her here, I will call you.

2. When I  find Olya and bring her here, I won`t go away, until  I get her address.

3. When I find Olya and bring her here, I will marry her when I`m twenty three at that.

4. When I find Olya and bring her here and if you kill me, I won`t miss.

5. When I find Olya and bring her here, I don`t know whether I can explain to you how it works.