LIEN LAST VISITED A CENTRE FOR CHILDREN WITH COGNITIVE IMPAIRMENTS...

26. Lien last visited a centre for children with cognitive impairments two weeks ago.A. Lien hasn't visited a centre for children with cognitive impairments for two weeks.B. It's two weeks when Lien visited a centre for children with cognitive impairments.C. Lien visited a centre for children with cognitive impairments for two weeks.D. This is the last time Lien visited a centre for children with cognitive impairments.