Food safety is important. Rules to stop people from food pollution.
-Will you keep these old toys?-Of course. They hold the sweetest __________ about my childhood.
-We had _______ unusual trip in South Korea by ________ ship.-Excellent!
—Lisa, this is your schoolbag. _____________.—Thank you.
—____________ is your math teacher?—My math teacher is Mr. Wang.
—Have a good day!—______________!