9. Many wildlife species are in danger of __extinction_______(extinct) because we have destroyed their natural habitats. 10. Untreated ________industrial________(industry) waste is a major cause of environmental pollution. 11. We will have health problems if our environment is full of pollution_____(pollute). 12. We should recycle more ___ to reduce __________________(reduce) our consumption of natural resources. 13. Air quality in the city started _____ to improve________(improve) after vehicles were not allowed into the city center.

em thấy nó thế này

what is this?

It is duck toy

What is that?

It is a car

What are those?

Those are balloons

What are these?

These are robot toys

What is this?

It is a ball ạ

tác dụng của dấu ngoặc kép trong câu

bài thơ "bài ca về trái đất"

Đỗ Thanh Hải - 99

Món ăn 1: Kẹo chỉ hồng 

Món ăn 2: Bánh đa cua

Món ăn 3: Kẹo gương