Chọn một đáp án trong số A, B, C hoặc D điền vào mỗi chỗ trống để hoàn thành đoạn văn sau:

           Air pollution, or dirty air, is (41)________ by many things. Great clouds of smoke come from factories chimneys. Cars send smoke and fumes into the air. Burning waste fills the air (42)_______ bits of dirt. Even burning leaves adds smoke to the air. Smoke of all kinds is bad to breathe and can do great harm to the body. (43)_______ countries have made laws to limit the amount of fumes cars can exhaust into the air. They also set limits on pollution from power plants and factories. Although scientists have not yet been able to stop air pollution, they have found ways to make cars and factories burn fuel more cleanly. People are also more careful than they once were. For example, they have stopped burning fallen leaves in the (44) ______. We still have a long way to go. But if we all work together, we can (45) _________the problem.

Chọn một từ thích hợp trong ô dưới đây điền vào mỗi chỗ trống để hoàn thành đoạn văn sau.

         If you live in a city, you will probably see many people; hear the noise of traffic and smell the ..... from cars and factories. We are living in a new era in the history of the world. Before this, most people were farmers. They lived in small communities ..... the country. Now many people are leaving the farms and moving into the cities. They are looking for ..... job. As a result, the cities are growing quickly. Most cities are becoming more crowded. People are driving more cars, burning more fuel, using more water, eating more foods, ..... more garbage, and producing more things in factories than ever before. Life in modern cities can ..... many opportunities, but also many difficulties.

Cho dạng đúng của động từ trong ngoặc để hoàn thành các câu sau:

Chọn một đáp án đúng trong số A, B, C hoặc D để hoàn thành mỗi câu sau:

Huong is a grade 10 student. She usually goes to ______ school every morning.

Vinfast made some new kinds of cars in Vietnam.