15. What does the sign mean?

A. There’s a port nearby.

B. There’s is an overpass for pedestrians ahead.

C. Be careful! There’re the stairs nearby.

D. There’s a tunnel at the end of the street.

16. What does the sign mean?

A. You are far away from the crossroads.

B. You aren’t allowed to go at the crossroads.

C. There’s a crossroads ahead.

D. Car isn’t allowed to go straight.