1Itisvery的精選

問題詳情：詞彙根據句意和漢語提示寫出單詞，完成句子。1.Itisvery__________(有意義的)forustojointheTree-plantingClub.2.Itis_________(必須的)forustoknowhowtowriteareport.3.Weshouldknowthe_________(背景)ofthee...