D Choose the correct item. e.g. Never carry a second person ........ your bike. A by B on C in 25 When you travel ........ a bus, don't annoy others. A on B from C at 26 It's safe to travel ........ train. A in B on C by 27 It isn't dangerous to travel ........ plane. A on B by C in 28 The library isn't far so I go........ bike. A in B by C on 29 Be careful when you cross the street ........ foot. A in B on C by 30 Always wear a seat belt when you travel ........ a car. A at B on C in