It is most ________that the experts will come to the area to investigate the possible damage caused by the heavy flood.

 By law,when one makes a large purchase, he should have _____ opportunity to change his mind.

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

________ other good students，in my opinion，Tom is ________ student.

My grandfather is always thinking for others. In other words, he is always ____.