15. This road sign means:

A. Do not leave your feet touching the grass.

B. Riding your bicycle in this area.

C. You can play soccer in this place.

D. You can throw the trash here.

16. This road sign means:

A. Cameras cannot be used near this school.

B. You must look after your cameras here.

C. This school is guarded by cameras.

D. The teacher doesn’t look at the cameras.