单项选择题

Mary has a curious expression on her face as though she ______ about something.

A．is smiling
B．were smiling
C．smiles
D．has smiled
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单项选择题
She chose cushions of a colour which ______ her carpet.
A．match
B．pair
C．help
D．agree
单项选择题
We have spent ______ sum of money ______ we did last year on advertising.
A．the same; as
B．the same; that
C．such; as
D．as; as
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