题目内容
完成句子
Large quantities of water _________(污染了), so the lake smells terrible.(pollute)
答案:
解析:
解析:
答案:have been polluted
解析:考查主谓一致和动词的时态、语态。large quantities of修饰名词作主语,谓语要用复数修饰;由the lake smells terrible可知谓语动词pollute要用现在完成时。
练习册系列答案
相关题目