第24课

to volunteer to teach in a backward region

action, activity

to visit the parents of schoolchildren

to speak, to make a speech

to pass an exam

to associate, to contact

household duties

thoughtful, considerate

to rehearse

butterfly

dance

champion, first-prize winner

to applaud

hardworking, diligent

to make progress, to improve

title

to read aloud

gentle

warm, enthusiastic

courage

young and middle-aged adults

to go around (to accomplish certain goals)

to stay behind to take care of things

theme, subject

geography

to interview

to utilize, to make use of

leisurely, free

to guide, to instruct

to train

to build, to construct

to worry about, to be concerned about

to undertake, to shoulder

duty, obligation

arduous, formidable

strength, capability

gain, result, acquisition