C plastic
plastic bag 塑料袋1 wendy is one of the top student 2 three times four is twelve 3 paul loses his temper easily4 never stay up too late 5 don't interrupt me when i am speaking 同意句6 my mother doesn't allow me to meet any net friends 7 my book is different from yours 8 she is stilll at school\同意句同意句同意句