Parliament did not accord full refugee benefits to twelve of the recent immigrants because it believed that to do it rewards them for entering the country illegally.
Parliament did not accord full refugee benefits to twelve of the recent immigrants because it believed that to do it rewards them for entering the country illegally. (A) to do it rewards (B) doing it rewards (C) to do this would reward (D) doing so would reward (E) to do it would reward 答案D 请问D中的doing是做什么成分?谢谢!