第29题: [单项选择]The government issued a warning to local companies that all waste must be disposed of ______ or they will face heavy fines. A. corrects B. correcting C. correction D. correctly 参考答案:D 答案解析:all waste must be disposed of语法结构完整,横线处应选择修饰be disposed of的副词,故(D)correctly为正确答案。