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Riding a bicycle is very useful. But people don't always take a bicycle for the following reasons. One of the reasons is the absence of bicycle lanes. Let's look an adcantages and disadvantages of riding a bicycle and building bike lanes. The most important advantage is more simplier and safer riding for bikers around the city. The disadvantage is that there isn't enough place for bike lanes in the city. So, it will be necessary to allocate part of road or pavement. As a result, there will be no place for pedestrians and road capacity will be reduced. Besides, many pedestrians ignore road signs and go along the bike lanes. This impedes bike traffic and increases the probability of accidents. In addition, a lot of money is required for building of bike lanes since it is necessary to put asphalt, draw markings and place road signs. I believe that in future the bike lanes will be an integral part of roads and a bicycle will become an important part of our life.

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.