--- The report is difficult to write. --- You can surf the internet, where you can find _____ information and useful expressions.

My brother likes eating very much but he isn't very _____ about the food he eats.

The strange grass never seen before is ______ to be a new plant.　　

The present system no longer meets the changing needs of our customers; we have to make a (n)          management system.

_______ the children grew old, they became more and more _______ in science.