THANH BOUGHT TWO LOAVES OF BREAD AND TOOK THEM HOME, BUT HIS MOTHER (ALREADY/ BUY) _______ ONE

5/ - SACH BT ANH 10 CO DAP AN
SACH BT ANH 10 CO DAP AN

5/ Thanh bought two loaves of bread and took them home, but his mother (already/ buy) _______ one.