—When is your father going to Hong Kong?—He is going there July 28th.
.All this_________ that knowledge comes from practice.
.The petrol tank is empty.I _________it up before we left home.
Driving a car is not as difficult as you imagine,if you_________ the rules.
When Mr.Jones gets old,he will _________ over his business to his son.
Mrs.Brown is supposed _________ for Italy last week.