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單項選擇題

Each person at the reunion was required to talk to other relatives to find out if they would buy one of the histories（）it were printed.

A.whether
B.if
C.when
D.after

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It is the best（）I have seen.

A.that
B.who
C.whom
D.which

單項選擇題

The old lady is quarrelling with others as if she（）mad.

A.was
B.is
C.are
D.were