It suddenly occurred to him ________ he had left his keys in the office.(2012·江西)
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 _____.
. It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
The author of the report is well _____ with the problems in the hospital because he has been working there for many years.