______ the Spanish realized that their new discoveries were part of an enormous continent, Christopher Columbus had already died.
A.As soon as
B.After
C.By the time
D.Once

______ the bus was full, four people from the queue decided to share a taxi home.
A.As a result
B.Though
C.Seeing that
D.Because of

Choose the correct words to complete the passage
A.has been
B.had been
C.was
D.is

Choose the correct words to complete the passage
A.aside
B.along
C.out
D.up

Choose the correct words to complete the passage
A.most of
B.almost
C.the most
D.most

Choose the correct words to complete the passage
A.who
B.whom
C.that
D.why

Choose the correct words to complete the passage
A.hear
B.hearing
C.heard
D.was heard

What is the main idea of the reading?
A.Collecting autographs can be a business.
B.Some autographs are rare.
C.Collecting autographs is fun.
D.Signatures of people who are dead are worth the most.

What does the price of an autograph mostly depend on?
A.How hard it is to find the autograph
B.When the person wrote the signature
C.How many people admire the person
D.Whether the person is living or dead

Which is true about Profiles in History?
A.It is an autograph museum.
B.It has the most expensive autographs.
C.It has the most expensive autographs.
D.It is a business that sells autographs.