—Did Jack come back early last night? —Yes. It was not yet eight o’clock _______ he arrived home.
In no city of China _____ little about the economic development.
You can not imagine a child ________so cruelly.
—Ann is in hospital. —Oh, really? Iknow. Igo and visit her.
Try your best to help the people when they are in trouble, _______you will feel pleased and happy.
_____ the right decision _____ the future is probably the most important thing we will ever do in our lives.