The old man smiled when he saw how pretty__________up to be during the past few years.

50 John is on the bottle again This sentence probably means _____

What kind of persons do you prefer to make friendswith—I choose my friends on their characters and how we __________.

Itwasfoolishofhimto______hisnotesduringthatimportanttest,andasaresult,hegotpunished.

Are you going to __________ this challenge（挑战）