The novel was concerned ______ the Second World War, while most readers are more concerned _____ the hero's love story.
—Have you read today’s report about your performance? —I don’t care whatabout me.
In the cave they found the very book, the cover of _______was torn.
—How was your examination? —It wasn’t very difficult,but it was__________long.
---How is your plan getting along? ----I can’t carry on _____ any longer. Someone must help me.
Nuclear energy may be dangerous if