The shopkeeper always gives people a smile on his face and they are very .
—Do you know Amy Hayes?—Of course,I know.She is the woman who built a house________rubbish.
—How much do I need to pay________the dictionary?—About fifty yuan.
As we’re students,we________obey the school rules.
All the students are talking and laughing in the classroom and it’s________.
—I hear you are not allowed to eat in class.—Right.It’s one of the________in our school.