Tiger eat his prey
penguin can swim
giraffe eat young bines
panda sleep on the tree
polar bear sleep in winter
Helicopter - Вертолёт, вертолетостроение, вертолетчик
3
this
that
those
these
4
не знаю, какие вы учили
in front of
on
behind
в четвертом выражении не вижу концовки
1 impressive
2 natural
3 scientists
4 volcanic
5 strangely
6 explanation
7 amazing
8 survival
9 a greedy businessman (OR) greedy businessmen
if it is singular, it needs 'a'
10 protection