单项选择题

I don't know（）it was that answered the phone this morning

A．who
B．why
C．how
D．that

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单项选择题
They（）themselves（）the politician because they hoped he would become president one day. At last he did.

A. connected, with
B. combined, with
C. linked, up
D. attached, to
单项选择题
Mr. Murray remains a devout supporter of the new theory.
A. an ardent
B. a leading
C. an influential
D. a coal
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