根据短文和首字母提示补全单词
Asmallboyandhisfatherwerewalkingbacktotheirhome.Itsuddenlybegantorainhard.Theydidnothavetheirumbrellaswiththemandtherewasnowheretohidefromtherain,sotheyweresoonallw___,andthesmallboydidn'tfeelhappy.Foralongtimewhiletheywerewalkingbacktotheirhomethroughtherain,theboywasthinking.Thenatlastheturnedtohisfatherandsaidtohim,"Whydoesitrain,Father?Itisn'tverynice,isit?No,itisn'tverynice,butit'suseful,Tom,"answeredhisfather."Itrainstomakefruitandvegetablesg___forus."Tomthoughtaboutthisforamoment,andthenheanswered,"Then,whydoesitrainontheroad,Father?"