Tom was ______ that he couldn’t understand ______ difficult sentence.
These plastic flowers look so _____ that many people think they are real.
It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
David paused to consult his notes, then_______ with his speech.
The policeman stopped him when he was driving home and _____ him of speeding.
_________ that he was in great danger,Eric walked deeper into the forest.