Forest fires start easily during (26)______ .

Chọn từ có trọng âm khác

What is the topic of the passage?

Often the rich topsoil is (27)________ away by the hot, dry winds .Streams, ponds, and wells often dry up during a drought, and animals suffer and may even die because of the lack of water.

: I was doing my homework. My computer crashed.

In 1686, Isaac Newton (publish) the Mathematical Principles of Natural Philosophy where he (lay) the foundations for universal gravitation and described the motion of the Sun and the planets.

Natural gas is cheaper and less polluting than coal.

=> Coal is…………………………………….