Change the following into the past indefenit 1.) i often see them in the park. 2.) do you pupils read english books? 3.) her mother theaches chemestry at school 4.) we don`t know his adress 5.) he gets up, washes, dresses, has breakfast and goes to school

Я правильно поняла, что надо просто в время переделать?
1) I often saw them in the park.
2) Did your pupils read English books?
3) Her mother taught chemistry at school
4) We didn't know his adress
5) He got up, washed, dressed, had breakfast and went to school.
6.) Did the doctor speak English?
7.) We understood the rule
8.) My friend didn't like such films
9.) In summer we picked berries and mushrooms
10.) They didn't change trains there.
11.) This worker repaired his car himself

Search result should be taught the language!Yuri Larionov (b. August 19, 1986 in Novosibirsk) - Russian figure skater, speaking in pair skating with Natalia Zabiyako (from May 2014). Together with Vera Bazarov it - silver medalist World Junior Championships in 2007, the champion of Russia in 2012, bronze medalist of the 2011 European silver medalist European Figure Skating Championships 2012. Master of Sports of Russia International Class [1].
As of February 2014 the pair occupies 8th place in the ranking of the International Skating Union (ISU). [2]
In 2008 he was convicted of doping, resulting in disqualification couple completely missed the 2008-2009 season.When Yuri Larionov was a child his family, with his father-servicemen moved to Tashkent, Uzbekistan. There, her mother took often boleeschego Yuri skating in figure skating. Later, the family returned to Novosibirsk and Larionov continued his studies there. Then, he moved to Moscow and worked there for four years, but without much success. Coach offered to try his hand in pair skating in Perm. A year later, in spring 2005, Ludmila Kalinina
created a couple of them with Vera Bazarov. [3] 

Сначала формулы . затем формулы двойного угла sin2α=2sinαcosα cos2α=cos²α-sin²α=cos²α-(1-cos²α)=2cos²α-1⇒  2cos²α=1+cos2α cos2α=cos²α-sin²α=1-sin²α-sin²α=1-2sin²α⇒  2sin²α=1-cos2α а) сos75°cos105°=cos(90°-15°)·cos(90°+15°)== sin15°(-sin15°)=-sin²15°=-(1-cos30°)/2=(cos30°-1)/2= ((√3/2)-1)/2=0,25√3-0,5б) sin75°sin15°=°sin(90°-15°)sin15°=cos15° sin15°=sin30°/2=1/4=0,25в) sin105°cos15°=sin(180°-75°)cos15°=sin75°cos15°=sin(90°-15°)cos15°=cos15°cos15°=(1+cos30°)/2=(1+(√3/2))/2=0,5 +0,25√3 2 способ формулы cosα·cosβ=0,5cos(α-β)+0,5cos(α+β) sinα·sinβ=0,5cos(α-β)-0,5cos(α+β) sinα·cosβ=0,5sin(α+β)+0,5sin(α-β) а) сos75°cos105°=0,5cos(75°-105°)+0,5cos(75°+105°)=0,5cos(-30°)+0,5 cos180°==0,5· √3/2+0,5·(-1)=0,25√3-0,5б) sin75°sin15°=0,5cos(75°-15°)-0,5cos(75°+15° )=0,5cos60°-0,5 cos90°=0,5·0,5=0,25в) sin105°cos15°=0,5sin(105°+15°)+0,5sin(105°-15°)= =0,5sin120°+0,5sin90°==0,5 sin(180°-60°)+0,5·1=0,5 sin 60°+0,5=0,25√3+0,5