______the persons concerned had anything important to say.A．No one ofB．Nobody ofC．None ofD

The argument between the Democrats and the Republicans concerns the topic of______.A．ethic

The author is most concerned with the possibility that after a few decades__________．

The rising crime rate is ______ major concern of______ society.A．the, theB．a, ／C．a, theD．／

The author is concerned about ______A．the fun for amusementB．the spending responsibilityC．

The writers find it difficult______.A.concerned w

Modern science fiction______.A.concerned with the