Food safety is important. Rules to stop people from food pollution.A、must makeB、must be madeC、can’t be made
Some scientists believe that there will be more robots inyears.
Jenny is university student,. She likes playing chess after school.
—Do you know _______ for Hainan last week? —Last Tuesday.
— A computer is very popular and helpful . — I think so. It _______ in many different fields.
My uncle is an experienced teacher. He_____English since 2002.