_____ as the "first lady of speech", Dr, Lillian Glass is recognized as one of the world’s leading experts on communication skills.
Every possible means _______to prevent the air pollution, but the sky is still not clear.
The doctor had almost lost hope at one point, but the patient finally______.
All the neighbors admire this family_______ the parents are treating their child like a friend.
—Were you all frightened at the sound of the fire alarm? — No. Everyone stayed _______ and obeyed the police.
—_______when has the country been open to international trade? — 1978,I suppose.