单项选择题

Ever since he () his job, Allen has been much happier than before.

A.has changed
B.had changed
C.changed
D.changes

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A.the much attractive
B.the attractive
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D.the more attractive
单项选择题
I have never wanted to be a white-collar worker,()I would be bored with office work.

A.so
B.if
C.as
D.or
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