单项选择题

Advertising media like direct mail, radio, television and newspapers ______ to increase the sales of industrial products.

A．have been used
B．will be used
C．is being used
D．has been used
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单项选择题
The board deemed it's urgent that these files ______ right away.
A．had to be printed
B．should have been printed
C．must be printed
D．should be printed
单项选择题
I still remember the day I first met her, she ______.
A．had long hair
B．has long hairs
C．had long hairs
D．has long hair
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