6. twelve(序数词)_______twelfth__________ 7. brother(名词所有格)_____brother’s___
8. do not(缩写形式)______don't_________ 9. speech(复数)______speeches_____________
10.shop(同义词)_______mall__________ 11.nine(序数词)______ninth_____________
12.have(第三人称单数)___has_________ 13.thirty(序数词)______thirteenth____________
14.sell(名词)__________sale___________15.four(写出基数词四十) ____forty_______