Tet is a festival .......... occurs in late January or early February

1a 2d 3 for 4a 5a 6a 8d 9c 10c

11 saving

13 Let me congratulate you on your winning

14 The girl who is wearing the blue dress sings beautifully

15 My father gave me a hug, and the feeling that he never wanted to let me go

16. She speaks English very fluent

17 if more trees are planted, we'll have more shady places

18. We can't finish the work unless you help us

II. Reading

1. People and indusries are polluting the air, rivers, lakes and seas

2. The burning of gasoline is one of the biggest sources of cacbon monoxide in the air, and it causes global warming.