For years the government of that country________their responsibility when it comes to the mentally ill.
Mr Wang went to Nanjing ____ October,1998 and came back home ____ the morning of Nov.5.
My father was disappointed ____ the news.
His teacher was angry ____ him ____ his being late.
She felt disappointed when she found out they had gone swimming____ her.
We left Xi' an _.___ a very hot summer afternoon.