a. Fill in the blanks. Listen and repeat.
(Điền vào ô trống. Nghe và lặp lại)
in a city underground under the sea on the sea |
5. ___________ - a very large city with more than ten million people living there
6. ___________ - a big apartment building under the ground
7. ___________ - a house with a computer to run it
8. ___________ - a house which is friendly to the environment