New sources of energy have been looking for as the number of fossil fuels continues to decrease.

Its lack of irregular verbs makes Esperanto to a unique language.

=> Unlike ..............................................................................................................................

Yesterday morning my friend Marco arrived before I finished breakfast.

=> Yesterday morning I was ..................................................................................................

You wouldn't find any more affectionate animal anywhere in the world.

=> Nowhere ..........................................................................................................................

Lee Kuan Yew was Singapore's prime minister for_________.

Choose the word whose underlined part is pronounced differently from the others.