The athletes made great progress by ________ (科学的) training.
The bell rang, _________ (宣布,宣告) the end of the class.
The troop covered _________ (粗略地,大约) 80 miles a day.
The beauty of the sunset was beyond _________ (描述).
__________ (代表) of many nations at the peace talks are working towards an agreement.
He__________ (溜进) into the small room without being noticed.
You must __________ (集中) all your energies on the study of English.
We were __________ (通知) by mail of the change in plans.
New technology is being _________(应用于) to almost every industrial process.
We _________(款待) my friend Susan to lunch at the Sayon.
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