18. At last all the soldiers _____________.
（A） died in the forest
（B） moved on through the forest
（C） followed those in front
（D） turned back to the village
19. It became darker and darker because ______________.
（A） it was going to rain
（B） the trees were thicker and thicker
（C） it was very late
（D） it was not the middle of the day
20. The old man _______.
（A） turned against his country by getting gold
（B） helped to save his country
（C） killed all the soldiers
（D） showed the soldiers back to town
Questions 21～25
There are thousands of different languages in the world. Everyone seems to think that his native language is the most important one， as it is their first language. For many people it is even their only language all their lives. But English is the world's most widely used language.
As a native language， English is spoken by nearly three hundred million people， in the U.S.A.，England，Australia and some other countries.
For people in India and many other countries， English is often necessary for business， education and other activities. So English is the second language there.
As a foreign language，no other language is more widely studied or used than English. We used it to listen to the radio，to read books or to travel. It is also one of the working languages in the United Nations and is more used than the others.
