15. What does the sign say?

A. You can’t use water for free here.

B. You can’t touch the faucet in use.

C. Don’t turn off the water tap.

D. Don’t leave the water tap on after use.

16. What does the notice tell us about?

A. Candidates will design their future in 300 words.

B. Candidates will talk about their city in the future in 5 hours.

C. Candidates will create their future city within 300 minutes.

D. Candidates will write about their future city within 300 words.