7.穿牛仔裤wear jeans

6.岁末晚会end of year party

5.一半的同学half the class

4.备考study for one’s test

3.让某人进let in

2.玩得高兴have a great time

1.去参加晚会go to the party

44.脱离危险be out of danger

Unit 5

43.处于危险之中be in danger

42.濒危野生动物wild animals in danger