填空题
Where was the letter probably placed many years ago?
填空题
What was there under a rock once at the southern trip of Africa?
填空题
How long did the journey take from England to India in the old days?
填空题
Where could the boats find the letters at Cape Horn?
填空题
What was marked on each box inside the tree in Washington?
填空题
Who did the people usually give letters to after the English colonists just arrived at America?
填空题
Where was the mail at a plantation passed on to me?
填空题
How long did it take for a letter sent by a post rider to reach the addressee between New York and Boston?
填空题
What did Franklin set up between the northern and southern colonies?
填空题
What was used to carry most mail after the colonies became a nation?