True, false or doesn’t say?
1. Oculus Rift owes its development to smart phone technology. ___
2. Facebook paid one billion dollars to buy Oculus rift. ___
3. You can play computer games standing up with it. ___
4. People who used the Oculus Rift felt that they were in another world. ___
5. Some people who played games with it felt sick. ___
6. The Oculus Rift is finished and ready. _

mr adams doesn'n work on monday, does he?

  mr adams works on tuesday, doesn't he?

the present perfect continuous

2.-yes,they have living in  at the moment for 2 years

3. he has been waiting for mary more than an hour.

4. they have benn sitting in the garden since dinner time

5. he has been playing tennis since 10 a.m.

6. i have benn learning spanish for 5 years.

7. he has been working for the same company since he left school.

2.they have been living in edinburg for two years

3. he has been waiting for mary more than an hour.

4. they have benn sitting in the garden since dinner time

5. he has been playing tennis since 10 a.m.

6. i have benn learning spanish for 5 years.

7. he has been working for the same company since he left school.

во всех случаях на present perfect continuos указывает промежуток времени и предлоги for, since.

cat: on average, cats spend 2/3 of every day sleeping.  cats make about 100 different sounds.  a cat can jump up to five times its own height in a single bound.

cow:   a cow can’t produce milk until she has had a calf.  there are about 920 different breeds of cows in the world.  cows can live 25 years.

dog:   a dog, named laika, was the first in space in 1957.  nose prints are used to identify dogs, just like humans use fingerprints. a    dog's smell is estimated at 1 million times better than humans.

hamster:   hamsters can travel about 8 miles in search of food.  hamsters react to their names.  hamsters are color blind.

giraffe:   giraffes drink large quantities of water when it is available enabling them to live for long periods in arid areas. coat of giraffes is made up of brown patches of hair separated by lighter hair. each giraffe has a unique coat pattern.

guinea pigs: guinea pigs are born with fur and with their eyes open.  guinea pigs need to gnaw to wear down their teeth. 

duck:   when ducks quack they have no echo.  some ducks can fly about 332 miles a day.  ducks have webbed feet, which act like paddles.

koala:   koalas sleep for up to 18 hours a day.  koalas very rarely have twins.baby koalas are called ‘joeys’.

rabbit:   rabbits have 28 teeth.  rabbits do not hibernate.  rabbits can jump 36″ and higher.

seahorse:  

seahorses have no teeth and swallow their food whole.  a male seahorse becomes pregnant when a female deposits her eggs into his pouch.  there are approximately 35 known seahorse species.

hedgehog:   hedgehogs are solitary animals.  the average lifespan of a hedgehog is 3.5 years. some hedgehogs can live up to 9 years.  hedgehogs curl into a prickly ball when attacked.

frogs: absorb water through their skin so they don't need to drink.  frogs can lay as many as 4,000 eggs in frogspawn.  the eyes and nose of a frog are on top of its head so it can breathe and see when most of its body is under the water.  frogs need both water and land to live.