单项选择题

— Hs your mother finished her pper yet — I don’t know; she _______ it this morning.wroteB

— Hs your mother finished her pper yet — I don’t know; she _______ it this morning.wroteB.hs w— Hs your mother finished her pper yet — I don’t know; she _______ it this morning.wrote B.hs written C.hd written D.ws writingA.wroteB.has writtenC.had writtenD.was writing