【導讀】1.2.3.4.5.6.16.This(is/are)Peter'sbag.17.That(is/are)myschool.18.These(is/are)myfriends.19.Thispainting(is/are)beautiful.20.Those(is/are)chairs.21.These(is/are)myfather'sbooks.22.That(is/are)acupofcoffee.23.This(is/are)ahorse.24.Those(is/are)bigboxes.25.This(is/are)honey.31.Whosecatsarethose?32.33.Sunday?34.Whataretheydoing?35.Howoldisyoursister?36.WhereisWilliam?37.38.Whatismotherdoing?39.WhereisAuntYeo?40.do?