Today is World Environment(环境) Day. Wang Lin meets a volunteer(志愿者) in the street.
A. pick up the waste paper B. make the river dirty C. care for the animals D. clean the classroom E. draw on the wall F. waste water G. play sports H. play football on the street |
A. pick up the waste paper B. make the river dirty C. care for the animals D. clean the classroom E. draw on the wall F. waste water G. play sports H. play football on the street |
A.must | B.need | C.necessary | D.have to |
A.need | B.would | C.shall | D.has to |