问题补充:
We must make to the public that something should be done to stop pollution.
A. what is clear
B. it is clear
C. it clear
D. that clear
答案:
A. what is clear
B. it is clear
(答案→)C. it clear
D. that clear
解析:考查形式宾语。It 是形式宾语,真正的宾语是that something should be done to stop pollution.形容词clear是宾语补足语。句意:未命名必须向公众讲清楚应该采取措施来阻止污染。