Men (a) — ever since they first appeared on the earth. In primitive time, they did not travel for pleasure but to find new places. They (b) — themselves with simple weapons. Their journeys (c) — long tiring and often dangerous. Being intelligent, they soon (d) — easier ways of travelling. They (e) — on the backs of their domestic animals. They (f) — boat and used it to travel across water. Travelling, of course, has now (g) — a highly organised business. There are vehicles which (h) — us with comforts and security. If we want to go abroad, we (i) — a passport and a visa. If we (j) — any of them, our journey may be ruined.