Circle the word whose stress is on the first syllable.

Nowadays, people are thinking of _______ energy as an alternative.

Choose the best answer that is suitable for each blank or the underlined word or phrase.

Nobody knows exactly there is how much ________ left in the world.

Commonly, __________ is used for lighting in modern society.

Circle the word whose bold part is pronounced differently from those of the other three.

If we don’t start __________ energy now, it will be too late.

Circle the word whose bold part is pronounced differently from those of the other three.