这次校庆时，他将第一次做主角。
zhè cì xiào qìng shí, tā jiāng dì yī cì zuò zhǔ jué.
He will play the leading role for the first time in the next school festival.
他们互帮互助，把校庆搞得很成功。
tā men hù bāng hù zhù, bǎ xiào qìng gǎo dé hěn chéng gōng.
They helped one another to make the school festival a success.