1 were
2 had
3 was
4 was
5 was
6 had didn't have
7 had
1. The advantages of the high-speed ground transport are ( Present Simple Active Voice; to be- инфинитив) obvious. Преимущества высокоскоростного, наземного транспорта очевидны.
The advantages of the high-speed ground transport aren’t obvious.
2. Steel replaced ( Past Simple Active Voice ; to replace - инфинитив ) iron everywhere in the rail construction. Сталь везде заменила железо в конструировании/сооружении рельс.
Steel didn’t replace iron everywhere in the rail construction .
That school my fevourite
I don't like Maths
i respect our teachers
my fined is so lazy
i don't have a time
I wake up early
...
My mom is a teacher
Я думаю, что так, если конечно вы это имели ввиду
Вы собираетесь написать лучшему другу письмо о ваших прошлых каникулах.