Make sure you know the words and word combinations from the box and insert them into sentences.
( consists, the system of piping, explosions, volume, the boiler, tank, radiators, the
water, at all times, hot water installation )
A steam, or a hot water heating plant essentially of the radiators, the
boiler and connecting the former with the latter. Steam or hot water
from is circulated through the piping and : in these the steam
condenses giving up its latent heat and given up some of its heat, thus
warming the rooms. In the usual , the boiler, pipes and radiators are kept
full of water , an expansion being provided to compensate for the
increase in of water when heated and to prevent in case of
generation of too much steam.
I insist that you do your homework. You ___ must do your homework.
2. Will you let me speak to David, please? ___May I speak to David,
please?
3. Talking is not permitted during the test. You _can talk during the
test.
4. It isn’t possible for him to come to the party. He _may come to the
party.
5. It’s forbidden to feed the animals in the Zoo. You _can feed the
animals in the Zoo.
6. Would you mind if I read your book? May___ I read your book?
7. Perhaps they’ll come with us. They ___must come with us.
8. Would you mind if I use your glasses? May I use your glasses?
9. Perhaps, she will phone them today. She ___must phone them today.
10. Perhaps, she is asleep now. She must be asleep now.
11. I don’t want anyone to know it. You __can tell anyone.
12. Listen! I __can hear someone crying.
13. You___can___ be a member of the library before you can borrow books.
14. I see your passport, please?
15. Don’t tell anybody what I said. You __must___ keep it secret.