Food safety is very important. -So some rules to stop people from polluting food.

For many online shops, the price of their products can be decreased _______ 30% in the holiday seasons

Don’t forget to return the book on time.——________.

Please don’t tell anybody about this, Linda.— .

What does the sign over there read?―“No person ______ smoke or carry a lighted cigarette，cigar or pipe in this area．”