** Write sentences about yourself,
Use the past continuous. What were you
doing
1
at 3 o'clock yesterday afternoon?
2
at 10 o'clock this morning?
3 three hours ago?
4
last Saturday?
5
at 8 o'clock last night?
6 last summer?
7 at half past seven yesterday morning?
8 this time last week? ​

Оу
The form of the penguins body is streamlined. Muscles and bones allow them move under water and use their wings like screws. Unlike other flightless birds, penguins have a sternum with a distinct keel, which is attached to powerful muscles. Underwater swimming is different from flying in the air, that wing is expended the same energy on lowering, because water resistance is greater than air resistance, so the blades of the penguins have compared to other birds a large surface which supports the muscles responsible for lifting the wing. The humerus and forearm bone connected to the elbow straight and stiff, which increases the stability of the wing. The femur is very short, the knee joint is stationary, and the legs shifted back, which is a direct cause unusual gait. Large feet with flipper relatively short - while they stand on the land, they often rest standing on their heels, with a hard tail serves them additional support. The penguins tail is much shortened. The second difference of penguins from other birds is a density of the bones. All birds has a tubular bone that makes the skeleton lighter and allows you to fly or to run fast.

The Amazon is the second longest river in the world after the Nile. It flows across the continent of - South America, from the Andes mountain range to the Atlantic Ocean. The Amazon is over 4 thousand miles long and up to 2000 miles wide. Thousand of small rivers flow into the Amazon, and between them they drain half the vast continent of - South America. This area is the Amazon Basin, a huge wilderness of tropical forest and grassy plains. The Amazon begins only 100 miles from the Pacific Ocean, but it travels eastwards across the country instead of taking the quick route and flowing down the steep western slopes. Halfway along its length it reaches - Manaus, the biggest city in the Amazon region. Near - Manaus the Amazon is joined by another huge river, the Rio Negro, which has very clear water.