能想出这么一个好主意很棒!
It’s wonderful to________ ________ ________such a good idea!
We are very proud of these national________(英雄)．
攀登岩壁非常危险。
________ ________ ________ ________danger in rock climbing．
A knife can be used for________(cut)bread．
好像谁也不了解这件事。
________ ________ ________nobody knew anything about the matter．