keepcleanbecauseless的精選

問題詳情：根據句意，用方框中所給單詞的適當形式填空。keep,clean,because,lesson,wonderful1.Youcan_______thebooksforthreeweeks.2.Theparkisso_______!Iwanttovisitittomorrow.3.Wedon’thave_______onSundays.4.It...