---Wow! Jerry got full marks again! How lucky he is! --- _______. He is not so much lucky as hard-working. He makes full use of his time to study.
Because they usually receive the same score in the exams, there’s often disagreement as to ______ is the better student, John or Mary.
Some of the drivers were ______ by the police because of their good behavior in the traffic accident.
Bad habits, ______ formed(形成), are difficult to give up.
These natural parks are very important for preserving many animals, which would ______ run the risk of becoming extinct(灭绝的).
The girl didn’t know who ______ for the broken vase.