看图完成小短文。 A. B. C. Do you know the meanings of these signs? You can often see them in different places. Sign A 'SLOW' tells you not to drive too 1 . Sign B means that you mustn't turn 2 , but you can turn 3 _ . Sign C can be seen in a museum. It means ' _ 4_ Photos', so you mustn't _5 photos there. 1. _ 2. _ 3. _ 4. __ 5. _