次の文を訳してください。
The events described in a novel have not actually happened. If the novel is successful one must feel that if they were to happen they would do so precisely as the novelist says.(東京医科歯科大)
まとめ:doは前に出てきた動詞の代わりに使うことがあるので、「する」ではおかしい時はすぐ前の動詞を探して当てはめて見よ。