根据首写字母填词。
It’s a f    Sunday morning . There are many c     near the river . They are the students o     No. 1 Middle School . There are two teachers w    them . All the students are Young Pioneers . They are having t    Young Pioneers’ Day . They a      playing games now . They’re working . They are planting t    and f    . Some of the girls are carrying water
f    young trees . The teachers are h    them .