5.　　　 At least 30 unknown diseases have appeared ___________ (在全世界范围内)since 1970.

4.　　　 Greece is a_______(欧洲) country with a very long history.

3.　　　 Can you think of a s_________ where “doing it alone” might be more important than teamwork.

2.　　　 Joe and Nancy are not visitors here. They are both n_____ of the city .

1.　　　 It’s said that Australia became i_______ of Britain on the 1^st of January 1901.

20.It’s always difficult being in a foreign country, e_______ when you know little about the language.

Answers: 1. hiking 2.opinion 3.classical 4.fond 5.challenge 6.honest 7. loyal 8.match 9.mirror 10. deserted 11.share 12.adventures 13.cast 14.sorrow 15.speech 16.bravely 17.honest 18.rope 19. guns 20.especially

Unit 2

19.Keep your kids safe by keeping ________ (枪)out of their hands.

18.The man climbed the mountain by r________ in the dark.

17.Poke is very h_________. He told the truth of the accident.

16.He b_______ went into the hunting house to save the baby trapped there.