Добрый день!
Переведите предложения, ещё раз посмотрите таблицу времён Past Simple и Present Perfect.
1. Я видел её сегодня.
Я видел её вчера.
2. this morning - сегодня утром/ обратите внимание на схему во Ты видел её сегодня утром? (ещё утро)
Ты видел её сегодня утром? ( уже вечер)
3. Он жил в Лондоне 6 лет. (т.е. в течение 6 лет) (Сейчас он там не живёт)
Он жил в Лондоне 2 года. ( И сейчас там живёт)
4. Я был в Лондоне.
Я был в Лондоне на неделе. last week – на неделе

My familythere are four of us in my family: a father, a mother, me and younger brother. my father’s name is kosty, he is a bus driver. my mother’s name is lena, she is a kindergarten teacher. my name is sahsa, i am in the fifth grade and i go to music school. my younger brother’s name is roma, he is in the first grade. i always help him to do homework and i look after him while my mother and father are at work. we like to play ball and watch animated cartoons. we go fishing together with father. after that our mother cooks delicious fish soup. if we have time to spare we always spend it together. we like going to the cinema and walking in the park. in the summer we go to the river for swimming or go to the forest to gather berries and mushrooms. in the winter we go skiing and skating. my brother and i always help our parents. we wash up dishes and sweep the floor. moreover, we tidy our rooms ourselves. my parents are the best! our family is very united, close-knit and happy.

Belarus is a state in eastern europe, completely surrounded by land. this country has many buildings of the stalin era, historical military fortifications and untouched forests. in the capital, the city of minsk, is a monumental building of the kgb of the republic of belarus. its shape is visible from the nearby independence square. another attraction is the state museum of the history of the great patriotic war. also in minsk there are many different churches, for example the church of st. simeon and st. helena.