1.I don't want to walk to town.Let's take the bus.(4)
2.Dan and Michale often have bad dreams.(4)
3.She's Chinese.She's from Beijing.(7)
4. Did you have piano lessons when you were a child.(3)
5.Jack was very ill last year and he spent a lot of time in hospital.(5)
6.The past simple form of bring is brought.(7)
7.The past simple form of teach is taught.(6)
8.I need to make a phone call.(4)
9.He's Ukrainian. He's from Kiev.(9)
10.This is isn't my DVD.I bought it.(6)
11.Jan isn't from Slovakia.He's from the Czech Republic.(5)
Пошаговое объяснение:
Сторона BC - это катет противолежащий углу А= 30°, отсюда имеем
ВС=АС * tg 30° = 2/√3 см