A cocnputcr can oaly do            you have inrrreled it to do .

It was not just the size of the party last night _______ made it unique, but ________ it meant to our school.

In time of serious accidents, ________ we know some basic things about first aid, we can save lives.

. What the doctors really doubt is ______ my mother will recover from the serious disease soon.

Europeans always hold their fork in the left hand, ________Americans switch it between their left and right hands.