Variant 1 You could have come first and won the race if you … faster

16. It`s a lovely day! Let`s sit in the garden, … we?

A) may B) will C) shall D) can

17.They were driving to the airport when they suddenly remembered that they … off the central heating.

A) didn`t turn B) weren`t turning C) haven`t turned D) hadn`t turned

18. Let`s go out today, … ?

A) let we B) don`t we C) let us D) shall we

Snakes are found in nearly all parts of the world, both in water and on land. Most snakes live in tropical regions although some have been found as far north as the Arctic Circle. Many people think that snakes have slimly skins. However, like most reptiles, a snake`s skin is dry to the touch. It does not grow with the animal, and have to be shed regularly. Snakes shed their skins all at once, leaving a hollow skin that is an exact copy of their body surface except that it is inside out. Snakes do not have movable eyelids, which gives them a glassy, unblinking stare. Their eyes never close.