Tìm và sửa lỗi sai:

Ha Long Bay is one of the most beautiful natural wonder in the world.

Tìm từ đồng nghĩa với từ gạch chân:

Air pollution is a consequence of fossil fuel burning by motor vehicles, factories, aircraft and rockets.

I have been invited to a wedding __________ 14 February.

There's has been a steady rise in the average temperature around the planet over the last hundred years or so, and the majority of scientists put it _______ to human activity.

Many of the world's largest cities are _______ and some are permanently covered by a __________.