it is normal for parrots to talk, Einstein, a small bird, is unusual in that whenever she hears a new word or sound, she repeats it over and over until she masters it.
The managing director promised that he would _____ me as soon as he had any further information.
These plastic flowers look so _____ that many people think they are real.
When the big bills for mother's hospital care came, father was glad he had money in the bank to _____.
The farmers were more anxious for rain than the people in the city because they had more _____.
. It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.