Exercise 3. Заполните пропуски в предложениях.
But _ _ there are dangers as well ___ _ .
_ today Virtual Reality _ _ in medicine. In
The Virtual _ _ is still in the early stages of its development.
_ _ also used in _ training schools.
Not long ago _ _ considered an amazing _.

  5  предложениe

the university of california and the state university of new york are two examples of such public schools.

2)do

3) yummy

4)you

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.

1) there isn't a bookshelf at the window.2) there aren't two girls in the room.3) there isn't an armchair by the table.4) there aren't two beds in the bedroom