单项选择题

Only after I had reached the airport______ that I had forgotten to take my ticket with me.

A) I realized
B) have I realized
C) did I realize
D) I had realized
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Some people say that we live______ the age of computers.
A) with
B) in
C) on
D) for
单项选择题
In order to search for the escaped prisoner, the policeman decided to question______ comes along this road.
A) who
B) whom
C) whoever
D) whomever
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