There being no witness on the spot, the police were delayed by the ________of information about the crime.
—Does he know how to work out the problem? —Yes,he has ________ a good idea to solve it.
The trip will take about five months;it will be a long time ________ we meet them again.
This kind of medicine has a bad ________on our brains.
The chance I had been looking forward ________ at last.
The musicians were to play jokes on each other as well as play music,most of ________ was based loosely on the Beatles.