Read the passage and answer the questions that follow

A. a global competition to save the Earth’s energy

B. a worldwide event to help protect the planet

C. an activity of Sydney people to take place in March

D. the problems of climate change and show their commitment

A. unnecessary

B. useless

C. unused

D. unusual

A. the city of Sydney

B. a global event

C. Earth Hour

D. WWF

A. Malaysia

B. Australia

C. the UK

D. Buckingham Palace

A. the shortage of electricity

B. the problems of famous landmarks

C. a kind of environmental issues

D. the problems of weather