III. Fill in each blank with a suitable word from the box. high-speed harmful density slums eco-friendly flying
III. Fill in each blank with a suitable word from the box. high-speed harmful density slums eco-friendly flying renewable populated 1. Solar power is ______________ because it doesn’t harm the environment. 2. It is predicted that ______________ will be a popular means of transport by 2050. 3. Journey times have been reduced considerably thanks to … Đọc tiếp