I know you are shorter than your brothers, but you run _________

as he could, John had always triedto _____ the example he saw in Lincoln.

Mr Obama, who appeared to take the lead in the race inmost battleground states, seemed to______ an air of caution throughout thefirst Presidential debate

32The college education system should be reformed ______ it can follow the pace of the economic development

The company is prepared to upgrade the package of its products to _________ teenage buyers. [ ]