31.Our community appears more beautiful with green grass and
31.Our community appears more beautiful with green grass and colourful flowers ____ here and there. A.grow B.to grow C.growing D.having grown 我选A 33.The problem of carbon emission ____ at Copenhagen Summit has aroused the public’s wide concern. A.discussed B.having been discussed C.being discussed D.to be discussed 我选B 35.The customers objected ____ unfairly in the course of shopping. A.to be treated B.their being treated C.to being treatedD.having been treated 我选A 只有答案的话不要回答Cac