In ________ early 1990's, as ________ gesture of appreciation, the library was named after the businessman who donated most of the money with which to build it.
The time and effort he has devoted during the past few years _____ trees in that village are now considered to be very important.
— So you have met Maria? — Yes, it was last week ______ we attended Jack’s party.
Now that their parents are dead, the poor boy doesn’t know ________ the money they left.
It is said that the World Golf Championships (世界高尔夫球锦标赛) to be held in Shanghai will be ______ on TV.
Is this research centre _____ is full of modern equipment you always mention.