Task 4. Choose the correct preposition. 1. It isn't dangerous to travel ___ plane. A by B on C in 2. Be careful when you cross the street ___ foot. A on B by C in 3. The supermarket isn't far so I go ___ bike. A in B by C on 4. When you travel ___ a bus, don't annoy (раздражать) others. A from B on C at 5. Never carry a second person ___ your bike. A in B on C by 6. It's safe to travel ___ train. A on B by C in

ОБРАЗЕЦ ФОРМАТИРОВАНИЯ ВНУТРИ "answer":

<ol>
  <li>It isn't dangerous to travel <strong>by</strong> plane.</li>
  <li>Be careful when you cross the street <strong>on</strong> foot.</li>
  <li>The supermarket isn't far so I go <strong>on</strong> bike.</li>
  <li>When you travel <strong>on</strong> a bus, don't annoy (раздражать) others.</li>
  <li>Never carry a second person <strong>on</strong> your bike.</li>
  <li>It's safe to travel <strong>by</strong> train.</li>
</ol>

Ответ: 1. A, 2. A, 3. C, 4. B, 5. B, 6. B