While a huge amount of money ___been spent stopping pollution , large quantities of water_    _still heavily polluted．

The teacher and writer, as well as many guests ____ invited to the party held yesterday.

We collected a lot of books to get the necessary information but only half _________helpful, so we failed to finish the work. 

“All _____ present and all _____ going on well.” our monitor said.

There ______ a computer and two boxes on my desk.