During his last lecture, the scientist______(觉得)easier to explain the theory to those with some background knowledge. (find)

_____(获得奖学金) gave Martin the chance to go to a college in one of the

If times______(变了)，have our ways of thinking changed too? (change)

At the award ceremony, Mr. Jackson said, “For me, there has been______(没有更大的回报)than your support.”(great)

______(任何计划好了的事)is sure to change as one puts it into practice. (whatever)

Such knowledge is still useful ______(当应用) to similar situations in other countries. (when)