GRE Text Completion: Maggoosh-GRE填空Maggoosh - 9DY9O45OQW77TC97Y

The heckler, hiding amongst the amorphous crowd, is the epitome of ____________ – as soon as he has been identified, he goes scuttling off, head down, grumbling to himself. A. stealthiness B. outspokenness C. shyness D. aloofness E. cravenness F. spinelessness