1.Shortly after World War II, Japan began the great economic (sure, trait) that has put her among the world's top industrial nations

surge

2.All those smooth words and vague promises are not going to (adhere, deter) us from doing what we know is needed to improve conditions
deter

3.The City Council has approved funds for a new playground but we expect a (Lag surge) of several months before construction begins
lag

4.There is no one (optimist trait) that makes him so likable it is the overall effect of his personality
trait

All right! :-)

optimistic